Question

evaluate an expression for how much money Maria would earn in one day

Answer 1

$\begin{gathered} T=10.75+7.10h-5.50 \\ T=7.10h+5.25 \end{gathered}$

where h is the number of hours and T the total earn on 1 day

now we transform the mixed number on a fraction to repalce easlier

$4\frac{1}{2}\longrightarrow\frac{(2\times4)+1}{2}=\frac{9}{2}$

now replace h=9/2

$\begin{gathered} T=7.10h+5.25 \\ T=7.10(\frac{9}{2})+5.25 \\ T=31.95+5.25 \\ T=37.2 \end{gathered}$

Marie earn $37.2 in one day if she worked for 4 1/2 hours