What is the solution to in (x^2 - 16) = 0? x ± square root of 17.
x = ±4.
x = ± square root of 32.

Which is an equation for the nth terms of the sequence 12,15,18,21

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.