Solve the equation.175 - 351 = 22(x - 3)
A. -5
B. -21
C. 5
D. 21
Answer: A
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Use the pH scale to answer the question.What is the hydrogen ion concentration of a solution with pH 1.5?
A. 3.2 x 10-1 B. 3.2 x 10-4 C. 3.2 x 10-3 D. 3.2 x 10-2
Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.
x2 + 
x + 
A. 
(x - 7)(x - 1)
B. 3(x + 7)(x + 1)
C. 
(x + 7)(x + 1)
D. Prime
Express the given logarithm as a sum and/or difference of logarithms. Simplify, if possible. Assume that all variables represent positive real numbers.logn 
A. 
logn4 + 
lognx - 
lognz
B. 
logn4 - 
lognx - 
lognz
C. 
logn4 + 
lognx + 
lognz
D. 
logn4 + 3 lognx - 7 lognz
Solve the problem.A rock falls from a tower that is 147 m high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
Round to the nearest tenth, if necessary.
A. 11.9 sec B. 4410 sec C. 12.1 sec D. 5.5 sec