Use substitution to solve the system of equations. y = 4x 2x − y = −8 a. (4, 1) b. (4, 16) c. (2, −8) d. (−8, −2)

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet