Carl is paid $10 plus $8 an hour he was paid $66 how many hours did he work?

10+8h=66
minus 10 both sides
8h=56
divide both sides by 8
h=7
worked 7 hours

To solve this question you need to make an equation including each variable: the extra $10, the $8 per hour (we'll represent hours as h) and the total amount of money, $66. Then simply solve the equation to get your final answer.

10 + 8h = 66
8h = 56 Subtract 10 from both sides
h = 7 Divide both sides by 8

In other words, he worked 7 hours. 

In this problem it decreased 20%

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.