Find a? b.a = 4i + 8j, b = -2i + 3j
A. 16
B. 
C. 32
D. 
Answer: A
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Write the inequality using interval notation, and illustrate the inequality using the real number line.t ? 6
A. (6, ?)
B. [6, ?]
C. (6, ?]
D. [6, ?)
Is f(x) an even or odd function? What symmetry does its graph exhibit?f(x) = 
A. Odd; symmetry with respect to the origin B. Even; symmetry with respect to the origin C. Odd; symmetry with respect to the y-axis D. Even; symmetry with respect to the y-axis
Solve the problem.The hydrogen ion concentration [H+] of a cleaning solution is 5.3 × 10-11 moles per liter. Find the pH value of the solution to the nearest tenth. Is the cleaning solution acidic or basic?
A. pH ? 12.7, basic B. pH ? 3.3, basic C. pH ? 5.8, acidic D. pH ? 10.3, basic
List the given numbers in order from least to greatest.0.96, -5, 6, -2
, 1
, -2.6
A. -5, -2.6, -2
, 0.96, 1
, 6
B. -5, -2
, -2.6, 0.96, 1
, 6
C. -5, -2
, -2.6, 1
, 0.96, 6
D. -5, -2.6, -2
, 1
, 0.96, 6