Simplify the expression.18 ? (-5)
A. -90
B. -85
C. -108
D. 85
Answer: A
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A package is pushed across a floor for a distance of 30 feet by exerting a force of 15 pounds downward at an angle of 
with the horizontal. How much work is done? Apply the rules regarding the use of significant digits when determining your answer.
?
__________ 
Fill in the blank(s) with the appropriate word(s).
Answer the question.According to the rules for order of operations, the first steps in evaluating the expression 
for 
are to substitute 3 for x and then .
A. multiply 5 by 3 B. subtract 55 from 5 C. subtract 5 from 55 D. find the cube of 3
?Find the matrix of the quadratic form associated with the quadratic equation 
.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Solve the problem.At an airport, 22 domestic flights arrive for every 14 international flights which arrive. If 49 international flights arrived yesterday, how many domestic flights arrived?
A. 31 domestic flights B. 1078 domestic flights C. 22 domestic flights D. 77 domestic flights