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.
-Helen Weller invested $10,000 in an account that pays 12% APR. How much additional money must be invested in an account that pays an APR of 15% so that the total interest is equal to the
Interest on the two investments at the rate of 13%?

A) $5000
B) $10,000
C) $7000
D) $6000