posted by .

you are driving at a speed of 55 miles per hour to your sister's house. at 1pm, you are 150 miles from her house. write an equation that models the distance from you sister's house in terms of the number of hours since 1pm.

  • algebra -

    We need a variable for the time. Let's call that t. And we can call the distance d.

    At t = 0 (1pm) you are 150 miles away, and as t increases, the distance decreases, so we need to subtract some multiple of t from 150 as we go.

    We need something that starts with

    d =

    since the distance is what we want to know, and the right hand side will be like

    150 - something * t

    Of course, technically, we'd need to limit the domain of t; otherwise, after 10 hours, we'll be negative miles away.

  • algebra -

    It's b boib boib bo ibboi boib

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    Hannah took a trip yo visit her cousin. She drove 120 miles to reach her cousin's house and the same distance back home. a) It took her 1.2 hours to get halfway to her cousin's house. What was her average speed, in miles per hour, …
  2. algebra 1

    You are driving to your sister's house at 55 mph. At one pm, you are 150 miles from her house. Write an equation in the form of y=mx+b that represents the problem.
  3. trig

    The angle of elevation from the top of a house to a jet flying 2 miles above the house is x radians. If d represents the horizontal distance, in miles, of the jet from the house, express d in terms of a trigonmetric function of x.
  4. Calculus

    A straight driveway perpendicular to a straight highway leads to a house located one mile away. A truck travels past the house traveling 60 miles per hour. How fast is the distance between the truck and the house increasing when the …
  5. algebra

    The question is: You plan on attending a picnic for the up coming holiday. You can either go to your sister's picnic who lives 10 miles west of your house or to your friends picnic who lives 10 miles east of your house. write an absolute …
  6. Alg 1

    Issa is driving to the airport to catch a flight to miami, and her arrival depoends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph and …
  7. algebra

    Sam's sister lives 100 miles away. Sam drove 50 mph for 1/2 hr toward his sister's house. How much farther must Sam travel to reach her house?
  8. math

    There are two roads that connect Emily's house and John's house. Emily told john that she drove 3/4 of the total distance from her house to john's house on one day, but she did not tell him which road she took. A. using the long road, …
  9. math

    Tina and Jim live 5 miles apart from each other. Tina ran from her house to Jim's house at a rate of 10 miles per hour. Jim ran from his house to Tina's house at a rate of 8 miles per hour. How far had Jim run by the time he crossed …
  10. Algebra 2

    chrystal jogs from her house to school, a distance of 6.8 miles, at a constant rate of 4.2 miles per hour. If x represents the amount of time (in hours) since chrystal leaves her house, which formula represents chrystal's distance …

More Similar Questions