Ineed the area of both the triangle and rectangle . how did you do this?

Charlie is a car salesman he earns $800 plus a 9% commission on all of her sales for the week if charlie receive the payment for $1960 this week how much where is total sales

Sanjay solved the equation below. which property did he use to determine that 7x+42=42 is equivalent to 7(x+6)=42 7x+42=42 7x=0 x=0

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )