Let B denote the price of a bag of groceries at time t. It is found that 
changes sign from negative to positive at 
. What can be concluded about the graph of B at the point ![]()
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??
A. The graph of B reaches a maximum at .
B. The graph of B reaches a minimum at .
C. The graph of B is increasing at .
D. The graph of B is decreasing at .
Answer: B
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Indicate whether the graph of the equation inclines upward or downward from left to right.y = 8x + 7
A. Upward B. Downward
Find the volume of the circular cylinder. Use 3.14 or 
for ? as indicated.Use 
for ?.
A. 197,120 m3
B.
| 70,400 m3 |
C. 281,600 m3
D. 3520 m3
Solve the problem.The table below shows the results of a consumer survey of annual incomes in 100 households. 
What is the probability that a household has an annual income less than $25,000?
A. 0.25 B. 0.69 C. 0.57 D. 0.31
Solve the system by the substitution or the addition method.
A. 
B. (-2, 11)
C. (-1, -1)
D. (1, -1)