Simplify the expression. Assume that all variables are positive.
A. t1/9
B. t20
C. t1/20
D. t9
Answer: C
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Solve the problem by estimating.Don traveled for 4 weeks in Africa last year and spent $2421 while he was there. Estimate the average amount he spent each day. Round the number of days to the to the nearest ten and the amount of money spent to the nearest hundred.
A. $800 B. $80 C. $700 D. $70
Find an equation for the line with the given properties.Vertical line; containing the point (-3.3, -4.1)
A. x = -3.3 B. x = 0 C. x = 7.4 D. x = -4.1
For each graph of a quadratic function 
a) Tell whether a is positive or negative,b) Determine the vertex,c) Determine the axis of symmetry, andd) Determine the range.
A. Negative; (-2, 2); x= -2; [2, ?) B. Positive; (2, -2); x= 2; [-2, ?) C. Positive; (-2, 2); x= -2; [2, ?) D. Positive; (-2, 2); x= -2; (-?, 2]
Solve the equation in the interval [0, 2?). Express solutions as approximations to the nearest hundredth.csc2x - csc x - 3 = 0
A. {2.72, 3.59, 4.96} B. {2.72, 3.57, 4.96} C. {2.69, 4.96} D. {0.45, 2.69, 4.02, 5.41}