Estimate the sum or difference by rounding each number to the nearest hundred.7,966 - 2,847
A. 5,119
B. 5,100
C. 5,200
D. 5,000
Answer: C
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Fill in the blank with one of the words or phrases listed below. 
An angle that measures 90° is called a(n) 
angle.
A. straight B. right C. supplementary D. complementary
Divide.
A. 1.
B. -1.
C. 1.3
D. -1.3
Write exponential notation.15 ? 15 ? 15 ? 15
A. 4 ? 15 B. 415 C. 151 D. 154
Find the vertex form for the quadratic function. Then find each of the following:(A) Intercepts(B) Vertex(C) Maximum or minimum(D) Rangeg(x) = x2 - 2x - 3
A. Standard form: g(x) = (x + 1)2 - 4 (A) x-intercepts: - 1, 3; y-intercept: -3 (B) Vertex (1, -4) (C) Maximum: -4 (D) y ? -4 B. Standard form: g(x) = (x - 1)2 - 4 (A) x-intercepts: - 1, 3; y-intercept: -3 (B) Vertex (-1, -4) (C) Minimum: -4 (D) y ? -4 C. Standard form: g(x) = (x - 1)2 - 4 (A) x-intercepts: - 1, 3; y-intercept: -3 (B) Vertex (1, -4) (C) Minimum: -4 (D) y ? -4 D. Standard form: g(x) = (x + 1)2 - 4 (A) x-intercepts: -3, 1; y-intercept: -3 (B) Vertex (1, -4) (C) Minimum: -4 (D) y ? -4