Work. Do Not Solve

Multiple Choice

work. Do not solve.
-5x + 9y = -12
-4x - 4y = -32
A) Substitution B) Addition
Answer: B
Write the word or phrase that best completes each statement or answers the question.
-The perimeter of a rectangle is 38 m. If the width were doubled and the length were increased by 14 m, then the perimeter would be 78 m. What are the dimensions?

A) Width: 9 m; length: 9 m
B) Width: 6 m; length: 13 m
C) Width: 13 m; length: 6 m
D) Width: 4 m; length: 9 m