Solve the problem.If a fair coin is tossed twice, the probability that at least one of the tosses will come up heads is
A. 
.
B. 
.
C. 
.
D. 
.
E. none of these
Answer: C
Mathematics
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Which of the following is equivalent to the following statement: 5n + 12 = 60 ??
A. ?n = 48 B. ?5n = 50 C. ?Twelve more than five times a number is sixty. D. ?five times a number increased by 12. E. ?Five more than a number times 12 is 60.
Mathematics
Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.05 B. 0.5 C. 3 D. 0.1
Mathematics
Estimate the answer to the problem.James' drive from home to work is 32 miles one way. If in a month he goes to work 19 days, then how many miles does he drive going from home to work and back in one month?
A. 1750 B. 1200 C. 1500 D. 900
Mathematics
Simplify the expression. Assume that all variables are non-negative.
A. 13
B. 13
C. 
D. 2
Mathematics