If |x| = 2 does x = 2 or x = -2? what is the solution to x = -2?

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

In what form is the following linear equation written y=9x+2

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0