word problem

Question

The cost of renting a sailboat at a lake is $60 per hour plus $14 for lifejackets. Write an equation in slope-intercept form that can be used to calculate the total amount you would pay for using this sailboat.

Answer 1

Remember, y = mx + b.

 

In this case:

 

y = total cost to rent the sailboat

m = cost per hour

b = fixed initial cost (i.e. cost for life jackets)

 

Therefore:

 

y = 60x + 14

 

 

 

 

 

 

 

Answer 2

y = mx ± b

 

The rate or slope, m, is 60 per hour

 

The initial value is 14, or the y intercept

 

y = 60x + 14