2 years ago

What is the best approximation of a 15% tip on a $38 car wash?

2 answers:

8 0

strip down please now and post it

Step-by-step explanation:

lol

Neko [114]2 years ago

3 0

Answer:The tip is 5.70 and the whole price is 43.70

Step-by-step explanation:those are exact

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Keith_Richards [23]

We have been given the equation

$y=-5.131x^2+31.821x-3.333$

It represents the number of people standing to catch a commuter train x hours after 5 A.M.

Now, in order to find the number of people in line at 7 a.m. , we need to substitute x= 2 in the above equation.

$y(2)=-5.131(2)^2+31.821(2x)-3.333\\y(2)= 39.785 \approx 40$

Therefore, the number of people in the line at 7 a.m. is 40

D id the correct option.

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2 years ago