Solve the problem by solving a system of equations graphically.The sum of twice a number and another number is 14. The difference between twice the number and the other number is 2. Find the numbers.
A. 3, 4
B. 5, 6
C. 4, 6
D. 5, 7
Answer: C
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A hypothesis test is to be performed. State the null and alternative hypotheses.Last month the mean waiting time at a bank was 8.4 minutes. The manager has installed a new computer system and claims that people will no longer have to wait as long.
A. Null hypothesis: mean waiting time < 8.4 minutes Alternative hypothesis: mean waiting time = 8.4 minutes B. Null hypothesis: mean waiting time = 8.4 minutes Alternative hypothesis: mean waiting time < 8.4 minutes C. Null hypothesis: mean waiting time > 8.4 minutes Alternative hypothesis: mean waiting time < 8.4 minutes D. Null hypothesis: mean waiting time = 8.4 minutes Alternative hypothesis: mean waiting time ? 8.4 minutes
Find the period of the function.y = sin 3x
A. 3
B. 1
C. 2?
D. 
Change the exponential expression to an equivalent expression involving a logarithm.5x = 25
A. log25 5 = x B. log25 x = 5 C. log5 25 = x D. logx 25 = 5
Match the equation with its graph.
A. ?
B. ?
C. ?
D. ?
E. ?
