Solve.It took Sara's mother 4 hours round trip to drive to the University and bring Sara back home for spring break. If the University is 90 miles from home, find her mother's average speed.
A. 22
mph
B. 55
mph
C. 46 mph
D. 45 mph
Answer: D
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Solve and graph. Write the solution in interval notation. 
+ 1 > 3
A. 
? 
B. 
C. 
? 
D. 
Multiply.-4 ? (-7)? 0 ? 3
A. 74 B. 0 C. -84 D. 84
Add or subtract as indicated. Make sure that your answer is reasonable by estimating first.86.279 + 34.9 + 585.133 + 393.841
A. 745.6961 B. 1414.253 C. 1100.153 D. 573.5333
Provide an appropriate response.If a negative integer is subtracted from another negative integer, what can you say about the result, given that the two integers are not the same?
A. The result could be either a positive or negative integer, but will not be equal to zero. B. The result could be either a positive or negative integer or zero. C. The result will be a negative integer. D. The result will be a positive integer.