5. Joaquin has agreed to lend his younger brother $45 so that he can buy a new
tank for his pet lizard. Joaquin is charging his brother 2% simple interest per
month. If his brother pays him back in 6 months, how much will Joaquin get
back?

Me because some of question i don’t understand

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers