The total cost of his session was $43.25. He had to pay a $7 entry fee and $1.25 every minute he was on the trampoline.

29 minutes

Step-by-step explanation:

You can set this up in a linear equation in slope-intercept form, where the y-intercept is the entry fee, y is the total cost, and the slope is the charge per minute. x will be the number of minutes he spent on the trampoline:

y=mx+b

43.25=1.25x+7

Then simplify:

36.25=1.25x

x=29

Therefore, he spent 29 minutes on the trampoline.

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6