Write each inequality in interval notation and graph the interval on a number line.x < -4
A. (-?, -4)
B. [-4, ?)
C. (-?, -4]
D. (-4, ?)
Answer: A
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The graph of a polar equation is given. Select the polar equation for the graph.
A. r = 4 sin ? B. r = 4 cos ? C. r = 2 + cos ? D. r = 2 + sin ?
Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.4x + 3y = 34x - y = 9
A. Infinite number of solutions
B. 
C. No solution
D. 
Write the binomial expansion of the expression.(4x2 - 1)3
A. 256x8 + 64x6 - 48x4 + 12x2 - 1 B. 64x6 - 48x4 + 12x2 - 1 C. (16x4 - 8x2 + 1)3 D. 64x3 - 48x2 + 12x - 1
Use the graph to solve the problem.The population (in thousands) of one city is approximated byf(x) = 
The graph of this function is shown below. In this graph, x = 0 represents 1970. Use the graph to estimate the population of the city in 1977.
A. About 71,100 B. About 59,100 C. About 53,100 D. About 66,100