Question

Renting a bicycle at a local Bike shop costs $30 for the first day and $10 for each additional day.
a. Create a chart of values and write an equation to find the total cost, C in terms of the number of days d.
b. Use the equation you created in Part a to find the cost of renting a bike for 5 days.
2. Simplify the following problem using the distributive property: 2x + 3y + 2(x – y) – 3x. Show each step in your calculation. Justify each of your steps using number properties.

Answer 1

1.
a. If you rent the bike just one day you don't have an additional cost.
The equation looks like this:

c=30+(d-1)*10

b. c = 30+(5-1)*10 = 30+40=70

2. 
2x+3y+2(x-y)-3x=
2x+3y+2x-2y-3x=
x+y