Find the range of the function.f(x) = x2 + 6x + 3
A. (-?, -3]
B. [-6, ?)
C. (-?, 0]
D. [-3, ?)
Answer: B
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Solve the problem.If x is the hydrogen ion concentration of a sample of water, then the pH of that water sample is 
If the pH of the water from one lake is 4.9 and the pH of the water from a second lake is 6.8, how many times greater is the hydrogen ion concentration of the second lake than the hydrogen ion concentration of the first lake? Round your answer to the nearest hundredth.
A. 5.26 B. 24.42 C. 0.01 D. 79.43
Find the measure of ?x in the triangle.
A. 56° B. 124° C. 46° D. 87°
Solve the problem.Consider the following 1 × 1, 2 × 2, and 3 × 3 matchstick designs.
How many matchsticks are needed for a 12 × 12 design?
A. 288 B. 148 C. 156 D. 312
Divide, if possible.468 ÷ (-18)
A. 36 B. 26 C. -36 D. -26