Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = -x2 - 8x 
A. vertex (4, 16)
intercepts (0, 0), (8, 0)
B. vertex (-4, -16)
intercept (0, -32)
C. vertex (-4, 16)
intercepts (0, 0), (-8, 0)
D. vertex (4, -16)
intercept (0, -32)
Answer: C
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Determine whether the given equation is a rational function.f(x) = 
A. Yes B. No
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. x + 2
D. 
Express the given vector as a linear combination of the unit vectors i and j.s = 
A. -15i - 9j B. -9i - 15j C. 15i - 9j D. 9i + 15j
Use a calculator to find a value of ? between 0° and 90° that satisfies the statement below. Write your answer in degrees and minutes rounded to the nearest minute. ? cos ?= 0.5673 ?
A. ? = 55°026' B. ? = 54°028' C. ? = 54°026' D. ? = 55°028' E. ? = 53°026'