21. ALGEBRA Rafael Ramirez is the lead food and beverage supervisor at a small restaurant. He is paid $14.40 an hour for a regular 40-hour week. His overtime pay is
$912.60 in total pay. How many hours of overtime did he work?
12 times his regular hourly rate. This week Rafael earned
A. 8
B. 10
C. 14
D. 16

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.