Determine the vertex and the x-intercepts. Then sketch the graph.y = x2 - 4
A. 
Vertex: (-4, 0); x-intercept: (-4, 0)
B. 
Vertex: (0, -4); x-intercepts: none
C. 
Vertex: (0, 4); x-intercepts: none
D. 
Vertex: (0, -4); x-intercepts: (-2, 0) and (2, 0)
Answer: D
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Find the area under the curve of the function on the stated interval. Do so by dividing the interval into n equal subintervals and finding the area of the corresponding circumscribed polygon.f(x) = 2x2 + x + 3 from x = -2 to x = 1; n = 3
A. 25 B. 13 C. 21 D. 17
Find the compound amount for the certificate of deposit. Assume daily compounding using the following table. Round to the nearest cent.
Amount: $8,400Rate: 5%Years: 5
A. $8,830.65 B. $13,848.78 C. $10,785.63 D. $9,759.31
Calculate the number of distinguishable strings that can be formed with the stated letters.2 c's and 6 d's
A. 12 B. 28 C. 56 D. 8
Solve the equation symbolically.
= 5
A. -5 B. 115 C. -135 D. 135