The Lakeside Marina charges a $45 rental fee for a boat in addition to charging $20 per hour. If Luis wanted to rent the boat for 5 hours, what would the total cost of the rental be? A.
$245

B.
$145

C.
$325

D.
$175

B.$145

Step-by-step explanation:

First the question said that to use the boat for one hour (per hour) cost $20. So to use it for 5 hours it will be =

1:$20

5:X

So you will cross multiply.

20*5=1*X=

100=1x

Divide both sides by 1

1x/1 * 100/1

X=100

Then yoiu add the rental fee for the boat

100+45

$145

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.