Answer:
Step-by-step explanation:
So, we se that there are 8 parts in total.
So, 50/8 is 6.25
So, 6.25*3 parts, which is how many there are for blue is 18.75
Answer:
One
Step-by-step explanation:
Set each equations equal to each other


Find the discrimant.

This means there is one real solution. Since the discramnt equal 0.
Answer:
$28
Step-by-step explanation:
Time = 4 hours
Charge = $7 / hour
Multiply those two numbers:
4 hour × $7 / hour = $28
Function f(time) = $7 × time
Hopefully this answer helps you :)