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Destinyyyy
 one year ago
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Destinyyyy
 one year ago
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Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0Solve. An investment is worth $3486 in 1995. By 2000 it has grown to $6441. Let y be the value of the investment in the year x, where x = 0 represents 1995. Write a linear equation that models the value of the investment in the year x.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2`x = 0 represents 1995` in the year 2000, what is x?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2`An investment is worth $3486 in 1995` x = 0 and y = 3486 the point (0,3486) is on the graph

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2`By 2000 it has grown to $6441` the point (5,6441) is on the graph

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2use the slope formula to find the slope through (0,3486) and (5,6441).

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2m = 591 is the slope b = 3486 since we know (0,3486) is on the graph

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2plug those into y = mx+b

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0The equation is y=591x+3486

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.038. Find the domain of the indicated combined function. Find the domain of (fg)(x) when f(x) = square root 5x+8 and g(x) = .square root 7x9

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0Ive never done a problem like this with square root so im not sure where to start

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0Normally id plug them in next to each other and multiple.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2first solve 5x+8 >= 0 for x

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2type `>=` to mean "greater than or equal to"

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2I agree, it's `x >= 8/5`

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2now solve `7x9 > 0` for x

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2there is NO underline because we don't want 7x9 to be 0

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2`x > 9/7` I think you mean

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2plot `x >= 8/5` and `x > 9/7` on the same number line then shade the region where they both overlap

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0The domain is [9/7 , infinity)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2if x = 9/7, then the denominator would be 0. But we cannot divide by 0

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2so we have to kick out 9/7 from the domain

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you were on the right track, just change the `[` to `(`

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2Domain: `(9/7, infinity)`

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0I only have options of [9/7, infinity) [0,infinity)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2hmm so strange. That has to be a typo because 9/7 isn't part of the domain

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2oh wait, it's (fg)(x) and not (f/g)(x) so yeah 9/7 is allowed
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