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Solve the equation without using a calculator.
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Q42: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A)
Q102: (-3, 3) and (-7, 0)<br>A) 25<br>B) 5<br>C)
Q118: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A)
Q140: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A) 35 B)
Q149: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A)
Q159: The length of a rectangular storage room
Q172: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A)
Q180: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A)
Q182: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A)
Q186: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB8475/.jpg" alt=" A) 243 B)