Ahat salesman earns a commission of 15% of all hat sales. yesterday he sold 3 hats for $90 each and 4 hats for $50 each. how much did he earn in commission yesterday?

He earned $70.50 as commission.

Step-by-step explanation:

Given: A hat salesman earns a commission of 15% of all hat sales. Yesterday he sold 3 hats for $90 each and 4 hats for $50 each.

Let's find the total sale value of the hat yesterday.

Total sale = 3*$90 + 4*$50

= $270 + $200

Total sale of the hat = $470.

The salesman earns 15% commission the total sale value.

15% = 15/100 = 0.15

commission = 15% of $470

= 0.15*470

= $70.50

He earned $70.50 as commission.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation: