What is the solution of the system? use substitution. y = x + 6 y = 2x

a. (2, 4)

b. (6, 12)

c. (–12, –6)

d. (–6, –12)

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

For what values of x is x2 + 2x = 24 true?