Use dimensional analysis to convert the unit of length.6 yards to inches
A. 18 in.
B. 72 in.
C. 2 in.
D. 216 in.
Answer: D
Mathematics
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Decide whether the expression is or is not an identity.
2 = 1 - sin x
A. Identity B. Not an identity
Mathematics
Evaluate.-|-x| if x = 10
A. 10 B. 1 C. -1 D. -10
Mathematics
Solve the problem.You purchased shares of stock for $560 and sold them for $620. Find the percent increase, or return, on this investment. Round to the nearest tenth of a percent, if necessary.
A. 10.7% B. 52.5% C. 9.7% D. 90.3%
Mathematics
Solve the problem.The table lists the average composite scores on a national entrance exam for selected years. 
Evaluate f(1991).
A. 130.9 B. 131.7 C. 131.5 D. 130.5
Mathematics