The area of the triangle is 12.72unit
The cost per unit of the auto shop function is the slope of the function
87 represents the slope and the cost per tire purchased
The function is given as:

A linear function is represented as:

Where:
m represents the slope or the unit rate.
So, by comparison:

This means that 87 represents the slope and the cost per tire purchased
Read more about slopes at:
brainly.com/question/18576224
Marcia started work at 7.32 and finished work at 3.43. In total she worked 8 hours and 11 minutes.
Convert the 11 minutes into decimal form:
11 minutes / 60 minutes in an hour = 0.18 (rounded)
Multiply her hourly rate by her hours worked:
8.18*6.75 = $55.125 (you can round this up or down).
Answer:
A
Step-by-step explanation:
I believe this is correct, if not feel free to let me know and I will fix it. I'm sorry in advance if it is incorrect.