Question

There is a step missing from the solution. Which equation is the missing step?

Answer 1

`64\text{ = 0.025x + 7 (option B)}`Step-by-step explanation:
`8=-\sqrt[]{0.025x+7}`

To determine the next step, we need to slove the expression.

divide both sides by -1:

`\begin{gathered} (8)/(-1)=\frac{-\sqrt[]{0.025x+7}}{-1} \\ -8=√(0.025x +7) \end{gathered}`

Square both sides of the equation:

`\begin{gathered} 8^2=(√(0.025x +7))^2 \\ 64\text{ = 0.025x + 7 } \\ 64\text{ - 7 = 0.025x } \\ 57\text{ = 0.025x } \\ Hence,\text{the missing step: }64\text{ = 0.025x + 7 (option B)} \end{gathered}`