A new work truck sells for $55,000 and depreciates at $ -6,500 per year. Write a linear function of the form y=mx+b to represent the value y of the vehicle x years
after purchase. Use your formula to find the value of the truck 5 years after
purchase.
per year.

y = -6500x +55000$22,500 after 5 years

Step-by-step explanation:

In the formula ...

  y = mx + b

the value of m is the change per year, and the value of b is the initial value. Using the given information, the equation is ...

  y = -6500x +55000

__

When x=5, the value is ...

  y = -6500(5) +55000 = -32500 +55000 = 22500

The value of the truck after 5 years is $22,500.

The formula for average, or mean, is: add all data and divide by the amount of terms.
So, you would add
34.5+34.9+34.2+33.4+35.9=172.9
You would then divide 172.9 by 5 because you had 5 numbers.
172.9/5=34.58
34.58 is your average.