Question

Which equation below would result in the highest earnings, y, when the number of hours worked, x, is 20?

y = 2x^2
y = 2^x
y = 2x + 2
y = |2x|

Answer 1

y = 2 x

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Answer 2

(B)

Explanation:

(A)The given equation is:

`y=2x^2`

Substituting the value of x=20, we get

`y=2(20)^2`

`y=2(400)`

`y=800`

(B) The given equation is:

`y=2^x`

Substituting the value of x=20, we get

`y=2^(20)`

`y=1048576`

(C) The given equation is:

`y=2x+2`

Substituting the value of x=20, we get

`y=2(20)+2`

`y=42`

(D) The given equation is:

`y=|2x|`

Substituting the value of x=20, we get

`y=|2(20)|`

`y=40`

Thus, the equation
`y=2^x` results in the highest earning y.