The expression 400 + 0.15s represents franks weekly pay as an appliance salesman where s is his total sales for the week if he wishes to make at least 1600$ this week how much will he need in sales

Answer: $8,000

Step-by-step explanation: Frank's weekly salary is calculated by the formula 400 +.15s. If he wants to earn $1,600 then it will be $1,600 = 400 +.15s.

In order to solve this you first subtract 400 from each side:

1,200 =.15s

Next, divide both sides by. 15:

$8,000 = s

Frank will need to have $8,000 in sales in order to earn $1,600.