My brother is 5 years older than me. my sister is 3 years younger than me. a how old will my sister be when i am 17?

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

How do i put 3(x+7) in distributive property