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18. The sales of lawn mowers t years after a particular model is introduced is given by the function y = 5500 ln(9t + 4), where y is the number of mowers sold. How many mowers will be sold 5 years after a model is introduced? Round the answer to the nearest whole number.
 one year ago
 one year ago
Check my work?!?!?!? 18. The sales of lawn mowers t years after a particular model is introduced is given by the function y = 5500 ln(9t + 4), where y is the number of mowers sold. How many mowers will be sold 5 years after a model is introduced? Round the answer to the nearest whole number.
 one year ago
 one year ago

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swiftskier96Best ResponseYou've already chosen the best response.1
y = 5500 In(9t + 4); t = 5 y = 5500 In[9(5) + 4] y = 5500 In(45 + 4) y = 5500 In(49) y = 5500(3.9) y = 21450
 one year ago

phiBest ResponseYou've already chosen the best response.1
looks pretty good, except you should not round ln(49) to 3.9 you should keep as many digits as the calculator gives you, and multiply by 5500 you will get a more accurate answer that way (and different from 21450)
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.1
But when i solve In(49) It is 3.9. So i should just leave the In(49) and multiply it by 5500? @phi
 one year ago

phiBest ResponseYou've already chosen the best response.1
you must have your calculator in fixed mode, where it is rounding the answer you can use the google search window to do calculations type in ln(49)= to see a more accurate number. that is the number you want the calculator to give you
 one year ago

phiBest ResponseYou've already chosen the best response.1
what happens if you type in 5500 * ln(49) in one line?
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.1
It doesnt give me a number. Hold on, im going to try something else...
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.1
I found an online calculator and it just gave me the same thing, only shorter. 3.8918202981106
 one year ago

phiBest ResponseYou've already chosen the best response.1
that looks good. now do 5500* 3.8918202981106
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.1
I got 19.459101490553. So my answer would be 19?
 one year ago

phiBest ResponseYou've already chosen the best response.1
5500*3.8918202981106=21405.0116
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.1
Oh my gosh... i did 5... wow. Ok.
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.1
So my final answer would be 21,405.
 one year ago

phiBest ResponseYou've already chosen the best response.1
so the answer is 21405 I had to look twice at your first answer 21450 (if you do 5500*3.9) which has the 5 and 0 swapped.
 one year ago

swiftskier96Best ResponseYou've already chosen the best response.1
Oh ok. Alright cool! Thanks so much! :)
 one year ago
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