Answer:
Put 4 in the place of x then you'll get

Answer:
2
Step-by-step explanation:
The speed depends on how hard Sam throws the ball so the dependant variable would be the speed.
The number 0 is basically nothing, so 7 divided by nothing is not defined. That's why calculators or even the most powerful computer can't divide anything by 0
The answer is C. I hope this helps you.