Simplify the expression.
?
23 - 2·4
?
A. 84
B. 4
C. –15
D. 15
E. 8
Answer: D
You might also like to view...
Express the percentage as a decimal.
%
A. 0.0125 B. 12.5 C. 0.00125 D. 0.125 E. 1.25
Special products can be illustrated by using areas of rectangles. Use the figure to justify the special product 
Give the monomial that represents the area of the black square.
A. ab B. b2 C. a2 D. 2a
Solve the problem.Suppose that the population of a certain city during a certain time period can be modeled with the function, P(x) = -0.1x5 + 3.6x4 + 5000, where x is time in years since 1960. By sketching a graph of P(x), estimate during what time period the population of the city was increasing.
A. Between 1960 and 1989 B. Between 1989 and 1996 C. Between 1960 and 1974 D. Between 1965 and 1989
Solve the problem.Sandy manages a ceramics shop and uses a 
kiln to fire ceramic greenware. After turning off her kiln, she must wait until its temperature gauge reaches 
before opening it and removing the ceramic pieces. If room temperature is 
and the gauge reads 
in 12 minutes, how long must she wait before opening the kiln? Round your answer to
the nearest whole minute. A. 129 min B. 183 min C. 59 min D. 79 min