Question

Help, please! An explanation would be great, I'm so confused on this question-

Answer 1

a=250 and b=10

Explanation:

a=5*100/2=250

b=200*5/100=10

Answer 2

a = 250

b = 10

Explanation:

1) a =
`(5x^2)/(2)`

Putting x = 10

a = 5(10)²/2

a = 5(100)/2

a = 250

2) b =
`(2x^2(x-5))/(10x)`

Putting x = 10

b = 2(10)²(10-5) / 10(10)

b = 2(100)(5) / 100

b = 1000 / 100

b = 10