Use substitution to solve the linear system of equations.

x = 4
-y = 1/2x

A) 4, 2
B) -2, 4
C) 2, -4
D) 4, -2

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

An ant travels at a constant rate of 30cm every 2 minutes. at what speed does the ant travel per minute