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where is the rest of the question?
well, it's part of a graph.
all you have is the equation. It does not say what to do.
i just need to know if i am to subtract 2.5 from 10.
i have to complete a table to solve the equation 2.5x - 10.5 = 64(0.5^x)
y = f(x) slope = 2.5 and b = -10.5 y = mx + b
I don't know if that helps me.
need to see the table? so you can see the full problem?
from the table what value of x will make the equation true?
for example when x = 0 on the left f(x) = -10.5 and on the right 64(0.5^x) = 8 -10.5 is not equal to 8 so x = 0 is not a solution
** on the right = 64 -10.5 not = 64 so x = 0 not a solution
replace x with the number and compute
they gave me that graph, i can't change the 2. i probably should change the 10 .
but do you see how I did x = 0 before I saw the table
they want you to do from x = 2 to x = 6
since you have the graph maybe you just have to look at the graph and fill in the table
the solution is where the graphs intersect
okay, but that's not what i'm asking. i'm asking if i am to subtract 2.5 from 10.5 to solve the f(x) equation.
thank you for explaining the other stuff though. :)
you have to use the value of x then you can compute. you cannot subtract a number from a variable. you can only add or subtract when you have like terms
a term with x is not like a number apples and oranges
to directly answer your question no you cannot subtract 10.5 from 2.5 x because they are not like terms.
i understand. so do i subtract how do i find the first input on the table?
i didn't mean to send the "so do i subtract" part. sorry.
I did when x = 0 I did when x = 3 and I did when x = 6 follow along replace the x with 4 and compute fill in the table replace the x with 5 and compute then fill in the table
again, the solution is the value of x that gives the same value in the table for f(x) and for g(x)
you said you have the graph. the solution is the point where the lines cross/intersect
oh, i didn't mean graph earlier, i meant table. the graph comes in later, to check the work.
and i'm sorry, but i don't know if i'm following you. so the x in 2.5x - 10.5 is either 2, 3, 4, 5, or 6? and i fill the x in the f(x) and g(x) equations with those numbers until they equal each other?
for example: f(x) = 2.5(2) - 10.5 = 5 - 10.5
basically yes look again at the drawing see how I did x = 3
and: g(x) = 64 (0.5^2) = 64 (.25)
the graphs intersect when x = 5
so the answer is x = 5?
you need to fill in the table
you need to fill in the table
f(x) = 2.5x - 10.5 = 2.5(2) - 10.5 = 5 - 10.5 = -5.5 correct so far?
okay. then: g(x) = 64(0.5^x) = 64(0.5^2) = 64(.25) = 16 correct?
and for f(x) 2 i would fill in -5.5, and for g(x) 2 i would fill in 16?
I can't send the graph as an attachment. when you are finished with the table will send you the link
okay so you want me to fill it in on here? i can draw it on here.
basically yes the correct notation is f(2) and g(2)
click on the drawing above and do when x = 4 and x = 5
0.5^3 would be .125 or 1.25?
oh it would be 1.25.
so you can input and see the graph
oh i understand. so .125.
I have to go. I sent the link for the calculator you might want to see the graphs. Intersection is at (5,2) Please review your basic stuff so you can focus on the new material. Always post all of the question so you can get the right help fast. All the best with your studies.
i know i got it right, so thank you so much for all your help and for dedicating this much of your time to assisting me. i really understand what i'm doing and i enjoy it as well, just like i used to. i really appreciate everything tonight. :)
you are welcome