Use the vertex and intercepts to sketch the graph of the equation. Give the equation for the parabola's axis of symmetry.x = -(y - 7)2 + 4
A. Axis of symmetry is y = 7.
B. Axis of symmetry is x = 7.
C. Axis of symmetry is y = -7.
D. Axis of symmetry is x = -7.
Answer: A
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Use a calculator with a 
key or a 
key to solve the problem.The exponential function f(x) = 47.36(1.027)x describes the population of a certain country, y, in millions, in year x. a) Substitute 0 for x and, without using a calculator, find the country's population in year 0. b) Find the country's population in year 27 as predicted by this function.
A. a) 1 million; b) 102.554 million B. a) 47.36 million; b) 97.233 million C. a) 47.36 million; b) 99.858 million D. a) 1.027 million; b) 94.677 million
Solve the problem.The distance d, in feet, a bomb falls in t seconds is given by d = 
. How many seconds are required for a bomb released at 6000 feet to reach its target? (If necessary, round your answer to two decimal places.)
A. 1076.66 seconds B. 67.29 seconds C. 326.35 seconds D. 33.65 seconds
Use a truth table to decide if the statements are equivalent.q ? p; p ? q
A. Equivalent B. Not equivalent
Write a logical statement representing the circuit.
A. (p ? r) ? (q ? ~r) B. (p ? r) ? (q ? ~r) C. (p ? r) ? (q ? ~r) D. (p ? r) ? (q ? ~r)