Solve the equation and express the solution in exact form.ln 3x + ln 9x = ln 28
A. 
B. {1}
C. 
D. {0}
Answer: C
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The pair of angles is supplementary. Given the measure of one of the angles, find the measure of the other angle.?ABC = 54.4°
A. ?PQR = 35.6° B. ?PQR = 144.4° C. ?PQR = 234.4° D. ?PQR = 125.6°
Solve.Find the surface area of the cone frustum generated by revolving the line segment 
, 
, about the y-axis.
A. 64?
B. 62?
C. 65?
D. 69?
Determine whether the argument is valid or invalid.Loretta's hobby is stamp collecting. If her husband likes to fish, then Loretta's hobby is not stamp collecting. If her husband does not like to fish, then Nathan likes to read. Therefore, Nathan likes to read.
A. Invalid B. Valid
Solve the problem.Express the gross salary G of a person who earns $40 per hour as a function of the number x of hours worked.
A. G(x) = 40x2
B. G(x) = 
C. G(x) = 40x
D. G(x) = 40 + x