Marshall and Graham both lift a 50 lb. weight. Graham lifts his weight in 5 seconds. Marshall takes 7 seconds. Which of the following statements is true? A. Graham had more power than Marshall.
B. Marshall had more power than Graham.
C. Both boys had equal amounts of power

C. Both boys had equal amount of power.

Step-by-step explanation:

C. Both boys had equal amount of power because they both attemtped to lift a 50 pound weight and succeded. Power doesn't matter when it comes to how long you hold the weight for.

1. minimum

2. 6400

3. eight

hope this !

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!