Write using exponential notation.8 ? 8 ? 4 ? 4 ? 4 ? 4
A. 8 ? 46
B. 28 ? 44
C. 82 ? 44
D. 326
Answer: C
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Solve using a system of linear equations in three variables.The Family Arts Center charges $23 for adults, $18 for senior citizens, and $9 for children under 12 for their live performances on Sunday afternoon. This past Sunday, the paid revenue was 
for 874 tickets sold. There were 42 more children than adults. How many children attended?
A. 240 children B. 458 children C. 328 children D. 296 children
Simplify the given expression. Write the answer with variables in alphabetical order and any constant term last.3xy2 + 7xy + 14xy2
A. 10xy2 + 14xy B. 17x2y + 7xy C. 17x2y4 + 7xy D. 17xy2 + 7xy
A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 1, an+1 = 2an
A. 1, 2, 4, 8, 16 B. 2, 4, 8, 16, 32 C. 2, 3, 4, 5, 6 D. 1, 3, 5, 7, 9
Multiply and simplify.(sin x - cos x)(sec x + csc x)
A. cos x - cot x B. tan x - sin x C. tan x - cot x D. cot x + csc x