Question

a jet ski company charges a flat fee of $20.00 plus $2.25 per hour to rent a jet ski. Another company charges a fee of $23.00 plus $2.75 per hour to rent the same jet ski.

Using a graphing calculator, find the number of hours for which the costs are the same. Round your answer to the nearest whole hour.

1. 2
2. 3
3. 4
4. 8

I dont have a graphing calculator and my computer crashed when i use the online ones. Help!

Answer 1

all i can tell ya is first company is 2.25x+20.00
and the second company is 2.75x+23.00

Answer 2

so i have to graph it? I still don't know how to do it without a graphing calculator since its telling me to use one.

Answer 3

i really dont understand how to solve the question :/

Answer 4

20 + 2.25h = 23 + 2..75h
now solve for h(hours)

Answer 5

you have to set them equal to each other, then solve for h

Answer 6

H = 3 so it is 3 hours correct?

Answer 7

wait sorry I did something wrong!

Answer 8

i would think

Answer 9

wait...there is something wrong...I am getting a negative number

Answer 10

me too -6!

Answer 11

@mathstudent55 ...a little help here

Answer 12

AH guys i put it wrong my fault. it's $24.00+ $2.25

Answer 13

Did u get the part @AllTheLonelyKillers said.. ?
I mean first u have to find 2 functions
1st one...
y = 2.25x+24.00
2 nd one
y = 2.75x+23.00

and plot them in a single graph and the x co-ordinate intersection point of 2 lines is the answer....
since u don't have graphing calculator..... here's the link to the graph..
http://fooplot.com/plot/83jc9fzots
hope this will help ya!!

Answer 14

thats better...
24 + 2.25h = 23 + 2.75h
24 - 23 = 2.75h - 2.25h
1 = .50h
1/.50 = h
2 = h

Answer 15

yaaay i was partly right

Answer 16

Thank you! Sorry about that haha now it makes sense

Answer 17

check...
24 + 2.25(2) = 23 + 2.75(2)
24 + 4.50 = 23 + 5.50
28.50 = 28.50 (correct)