Answer:
![\boxed{\text{D. y $\geq$ 37 500 + 0.05x}}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/8gvshtajp3t2bebaqvo3qaybilh9illqs5.png)
Explanation:
y = Juan's income
$37 500 = his salary
x = his sales
0.05x = his commission on sales
$37 500 + 0.05x = his salary + commission
Juan's income must at least equal his salary + commission.
None of the options is correct, but the closest one is D.
![\text{The condition is }\boxed{\mathbf{y \geq 37 500 + 0.05x}}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/wqqwvd5sp55yzir0cng1l05nja38btzq0o.png)