What is the y - intercept for y=4-2x​

What is the area of the triangle 10 13 12

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

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?