X-y= 3
a) Work out the value of 5(x - y)
b) Work out the value of 2x –2y
c) Work out the value of y-x

Anyone know? will mark brainliest if correct!

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?