algebra
posted by logan .
your local rollerblade rink will rent you blades for $14.00 for 3 hours or $29.00 for 8 hours. Asume the price increase is constant depending on the number of hours the blades are rented.
Find the expression

x = hours
y = price
two points (3,14) and (8,29)
y = m x + b
m = (2914)/(83) = 15/5 = 5
y = 5 x + b
14 = 5(3) + b
b = 1
so
y = 5 x  1 
hey damon..thank you for your answer but would 15/5=3...so where would the 3 go...thank you

whoops, sorry
m = (2914)/(83) = 15/5 = 3
y = 3 x + b
14 = 3(3) + b
b = 5
so
y = 3 x +5
Respond to this Question
Similar Questions

Math
The formula N = 10(4') gives N, the number of bacteria present in a culture after t hours. How many hours does it take for the number of bacteria to grow to 2,560? 
algebra
you rollerblade at an average speed of 8 miles per hour. the number of miles m you rollerblade during h hours is modeled by m=8h. do these two quantities have direct variation? 
algebra
you rollerblade at an average speed of 8 miles per hour. the number of miles m you rollerblade during h hours is modeled by m=8h. do these two quantities have direct variation? 
Physics
A helicopter has two blades (see figure), each of which has a mass of 220 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 45 rad/s. (a) What is the total moment of inertia of … 
physics please help me
A ceiling fan is turned on and a net torque of 1.6 N·m is applied to the blades. The blades have a total moment of inertia of 0.25 kg·m2. What is the angular acceleration of the blades? 
Math
Tricia spent $12 to rent ice skates. She rented them for 4 hours. Which number sentence can you write to find how much it costs to rent skates for one hour? 
physics
A helicopter has two blades (see figure), each of which has a mass of 270 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 52 rad/s. (a) What is the total moment of inertia of … 
algebra 1
your local rollerblade rink will rent you blades for $14.00 for 3 hours or $29.00 for 8 hours. Asume the price increase is constant depending on the number of hours the blades are rented. 
algebra
a student worked w hours on tuesday x hours on wednesday y hours on thursday and z hours on friday which algebraic expression represent the average arithmetic mean number of hours per day the student worked for the four days for any … 
Algebra
The charge to rent a trailer is $20 for up to 2 hours plus $8 per additional hour or portion of an hour. Find the cost to rent a trailer for 3.2 hours, 4 hours, and 7.6 hours.