Question

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

part A: 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)

Answer 2

@peachpi I already have part A: though.

Answer 3

@Michele_Laino

Answer 4

@phi

Answer 5

what did you get for A?

Answer 6

part A: y=65+80(x) plug in 5. 65+80(5)
y=65+400.
y=465.
when he rents the bike for five days, he pays 465. so if he rents it for a week he would be renting it for7 days (x)days. so y=65+80(7)
65+560.
y=625.

Answer 7

that is the correct equation, but I do not know what the rest is.
If you want to show your work, start by saying you have these two pairs:
(5,465) and (7,625)
and find the equation of a line through two points.

Answer 8

the rest would be what he has to pay in the week and I had to show how I got to 625

Answer 9

first find the slope = change in y divided by change in x
= (625-465)/(7-5) = 160/2 = 80

so
y= 80x + b
using (5,465) in that to find "b"
465= 80*5 + b
465= 400 + b
b= 465-400 = 65
so the equation is
y= 80x+65

Answer 10

part B, use "function notation"
I think they want you to write
f(x) = 80x+65

Answer 11

ok. and so for part C?

Answer 12

part C.
I would say , plot two points on the line, and "connect the dots"
x axis is days
y axis is rental in dollars

Answer 13

to make it fit on the graph better, you might want each "step" in the y-direction be say 20 or 40 dollars (rather than 1)

Answer 14

ok thank you.