PLZ HEL

C candies cost 5 dollars. how much money would 12 dollars cost?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

41/17 as a decimal rounded to the nearest hundredth

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers