hi
price all taxes included is : 9.99 + 0.03*9.99 ≈ 10.29
So change is : 11 - 10.29 = 0.71
The calculation is incorrect, because the slope is defined as

So, Emma has inverted numerator and denominator: she has calculated the inverse of the slope.
The correct calculation would be

D. 147 i hope it’s right if not i’m so sorry!
Answer:

Step-by-step explanation:
Given
--- driver 1
-- driver 2

Required
The time they passed each other
First, we determine the function of driver 2.
We have that:
and 
So, the function is:


The time they drive pass each other is calculated as:


Collect like terms


Divide through by 2t

Solve for -8t

Solve for t


A fair die has 6 sides so a 1/6 chance for each number
So divide 480/6= 80
80 times for each number, 80 for 6