Algebra
posted by suezette .
Dawn averages a speed of 18 miles per hour during her bike race. The race is 90 miles long.
Define a variable for the number of hours Dawn has been racing and use this variable to write an expression for the number of miles left in the race.

h = hours
d = distance left
d = 90  18h
Respond to this Question
Similar Questions

algebra 1
juan drives to work. Because of traffic conditions, he averages 22 miles per hour. He returns home averaging about 32 miles per hour. the toatle time traveled is 2 and 1/4 hours.define a variable for the time Juan takes to drive to … 
algebra
Sean and Barry are practicing in a 30mile bike race. Sean averages 20 miles per hour and Barry averages 15 miles per hour. Howm many miles will Barry be from the finish line when Sean finishes the race? 
prealgebra
your family is driving to houston,texas.A sign indicates that you are 700 miles from houston.Your car's trip odometer indicates you are 400 miles from home.YOu are traveling at an average speed of 60 miles per hour. A. write an expression … 
math
A family drove 1080 miles to their vacation lodge. Because of increased traffic density, their average speed on the return trip was decreased by 6 miles per hour and the trip took 2.5 hours longer. Determine their average speed on … 
math
in a bike race, ramit and keith started at the same time abd rode with constant speeds. Ramit rode 30 miles per hour, and keith rode at 35 miles per hour. If ramit crossed the finish line 10 minutes after keith, how many miles long … 
Math
A bike race is 32 miles long. By noon, Izek had ridden 3/4 of the distance. How many more miles did he need to ride to finish the race? 
math
Juan drives to work. Because of traffic conditions, he averages 22 miles per hour. He returns home averaging 32 miles per hour. The total travel time is 2 1/4 hours. Define a variable for the time Juan takes to travel to work. Write … 
algebra
A relay team is going to participate in a 150mile bicycle race. One rider averages 12 miles per hour. The second averages 16 miles per hour. Write a function modeling their trip, where x = the hours ridden by the first bicyclist and … 
math
In a grand prix automobile race, Speedy Ryder averaged 110 miles per hour for the first half of the course and 130 miles per hour for the second half of the course. Cannonball Carter maintained a constant speed of 120 miles per hour … 
Math
Four hours after the start of a 600 mile auto race, a driver's velocity is 150 miles per hour as she completes the 352nd lap on a 1.5 mile track a) find the drivers average velocity during the first four hours of the race. b) let f(x) …