A mover hoists a 50 kg box from the ground to a height of 2 m. what was the change in the box energy?
10J
100 J
1,000J
10,000 J
Can you show your work to please so I can understand?
Thank you so much.

Y=4x^2+x-1 solve using quadratic formula

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

What expression is equivalent to (2x-1)(x-3)?