Question

Can someone please help me with this question?



Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625.
Write an equation in the standard form to represent the total rent (y) that Max has to pay for renting the motorbike for x days. (4 points)

Part B: Write the equation obtained in Part A using function notation. (2 points)

Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals. (4 points)

Answer 1

The standard form is y = -43.2x + 4482.6. Function notation would be f(y)=-43.2x+4482.6

Answer 2

Graph the equation using the y-intercept of 4482.6 with a slope of -43.2. That gives you a line that goes downward, which is correct because as the days go on, Max is spending less to rent the bike. Or in other words, the more days he has it, the less his fee goes down per day.

Answer 3

Intervals for the y axis could be in 1000's, and intervals for the x axis could be in 10's.

Answer 4

has to be f(x)

Answer 5

But his cost function for rent is y, he stated above. Then change the x's in the equation to y's.

Answer 6

f(y)=-43.2y+4482.6

Answer 7

that makes more sense

Answer 8

You're right....oversight on the two different variables. Thanks for pointing it out. Dont need to cause further confusion for Ibbutibbu!

Answer 9

Thanks for the medal, BTW!

Answer 10

No Problem!