Solve the equation.1 + 
= 
A. a = - 
or a = 
B. a = -6 or a = 7
C. a = -7 or a = 6
D. a = 6 or a = 7
Answer: C
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Simplify.[47 + (-7)] ÷ (-5)
A. 
B. 35
C. -8
D. 8
Subtract the polynomials. Express your answer in standard form.(3m + 8m3) - (-5 - 4m - 3m3)
A. 5m3 + 7m - 5 B. 5m3 + 7m + 5 C. 11m3 + 7m - 5 D. 11m3 + 7m + 5
Solve the problem.Delane just purchased a new fish tank that is 4 times as large as her old tank. If the old fish tank was 5 gallons 2 quarts in size, how large is the new tank?
A. 24 gallons B. 20 gallons 2 quarts C. 22 gallons 2 quarts D. 22 gallons
The amount of time t (in minutes) a shopper spends browsing in the magazine section of a supermarket is a continuous random variable with probability density function
?
?
?
How much time is a shopper chosen at random expected to spend in the magazine section?
?
A. 
minutes
B. 
minutes
C. 
minutes
D. 
minutes
E. 
minutes