Math
posted by Rayray .
Charlotte is training for a marathon. Right now she is 21km from home. She is running toward home at a rate of 10 km per hour.(Let x=time(in hours); y=distance from home (in km).) [lHint: Charlottle's distance from home is decreasing.]
Respond to this Question
Similar Questions

math
How do you solve these types of problems.? 
math
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
Distance Traveled An athlete is 16 miles from home, running toward home at 6 miles per hour. (a) Write a formula that calculates the distance D that the athlete is from home after x hours. (b) Determine D when x = 1.5 hours. (c) Find … 
math
Over the river and through the woods to grandpa's house the smith grandchildren go. They drive 120miles to reach grandpa's house and the same distance back home. 1) It took 1.2hours to get halfway there. What is their average speed, … 
Math
Alex's distance form home is represented by the equation D= 0.5t +300 D represents his distance from home and t represents time in minutes How long will it take Alex to reach a distance of 182 km from home 
English
1. I have hunger to go home now. 2. I have a hunger to go home now. 3. I am dying to go home now. 4. I am looking forward to go home now. 5. I anticipate going home now. 6. I expect to go home now. (Are they grammatical? 
math
Aryan has to travel certain distance from his home at a speed of 5 kilometre hours on his way back to home the speed decreases to 3 kilo metre per hour find his average speed. 
English
1. You can go home now. 2. You are able to go home now. 3. You are allowed to go home now. (I allow you to go home now.) 4. It is possible for you to go home now.  It is a little confusing. If somebody … 
Math
Al and Bill live at opposite ends of the same street. Al had to deliver a parcel to Bill’s home, Bill one at Al’s home. They started at the same moment, each walked at constant speed and returned home immediately after leaving … 
Math Please help
Al and Bill live at opposite ends of the same street. Al had to deliver a parcel to Bill’s home, Bill one at Al’s home. They started at the same moment, each walked at constant speed and returned home immediately after leaving …