CAN SOMEONE HELP I WILL GIVE BRAINLIST PLEASE!

1) 32

2) 50

3) 10

4) 10

Step-by-step explanation:

1) 8 * 4 = 32

2) 5 *10 = 50

3) 90/9 = 10

4) 30/3 = 10

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

they charge the same amount at 20 minutes.

step-by-step explanation: