Solve the system by the substitution method. 
( __________, __________ )
Definitions:
Q7: Solve the following proportion. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8808/.jpg" alt="Solve
Q9: Multiply. (Assume all expressions appearing under a
Q42: d varies directly with the square of
Q55: Solve the following system by the addition
Q117: Rationalize the denominator in the following expression.
Q130: Simplify the expression to a single fraction.
Q183: Solve the following system by the addition
Q197: Solve the following equation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8808/.jpg" alt="Solve
Q207: Solve the following proportion. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8808/.jpg" alt="Solve
Q238: Perform the indicated operation. Reduce your answer