Simplify. Assume that any variables are positive.-
A. - 
B. - 
C. - 
D. - 
Answer: C
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Factor completely. Make sure you factor out the GCF first if possible. If prime, so state.5x2 + 40x + 80
A. 5(x + 8)2 B. 5(x - 4)2 C. 5(x + 4)(x - 4) D. 5(x + 4)2
Perform the indicated operation, where possible.
- 
A. 
B. 
C. 
D. 
The graph of a function f is given. Use the graph to answer the question.Find the numbers, if any, at which f has a relative minimum. What are the relative minima?
A. f has a relative minimum at x = -1 and 1; the relative minimum is 0 B. f has a relative minimum at x = -1; the relative minimum is 0 C. f has a relative minimum at x = 0; the relative minimum is 2 D. f has no relative minimum
Round to the indicated place.According to a study, life expectancy has increased by 38.26 years over the past century. Round this decimal to the nearest year.
A. 38.26 yr B. 38 yr C. 40 yr D. 38.3 yr