A saleswoman at a department store earns $1000 per month plus 6% commission on her total sales. If she earned $2200, what was the amount of her sales?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 min and 24.5 min what is the study margin of the error?

Is a triangle with sides of length 6ft, 21 ft, 23 ft. a right triangle?