Final answer:
Jo Ann White's total earnings for the week were $903.
Step-by-step explanation:
To find Jo Ann White's total earnings for the week, we need to add her salary and her commission. Her salary is $325 per week and her commission is 10% of her sales.
First, we calculate her commission by multiplying her sales ($5,780) by 10% (or 0.1): $5,780 x 0.1 = $578. Then, we add her salary and commission to find her total earnings for the week: $325 + $578 = $903.
So, Jo Ann White's total earnings for the week were $903.