Angela is 7 inches shorter than Valerie. Valerie is x inches tall. Write an algebraic expression for Angela's height.

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line

The salesperson earns a 5% commission on the first $5,000 she has in sales. the salesperson earns a 7.5% commission on the amount of her sales that are greater than $5,000. this month the sales person had $8,000 in sales. what amount of commission, in dollars, did she earn?