First estimate the answer. Then add or subtract to find the exact answer. Write answer as a mixed number. 
A. Estimate: 9; Exact: 8
B. Estimate: 9; Exact: 8
C. Estimate: 8; Exact: 8
D. Estimate: 8; Exact: 6
Answer: A
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Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.-5.3(6.3x - 2.9y - 1.7)
A. -33.39x - 15.37y - 9.01 B. -33.39x + 15.37y - 1.7 C. -33.39x - 2.9y - 1.7 D. -33.39x + 15.37y + 9.01
Provide an appropriate response. Find the radius of a circle that has a central angle of 2.3 rad and an area of 6.8 ft2.
A. 2.4 ft B. 3.0 ft C. 1.7 ft D. 5.9 ft
?Find the open intervals on which the function 
is increasing or decreasing.
?
A. ?The function is increasing on the interval 
, and decreasing on the intervals 
and 
.
B. ?The function is increasing on the interval 
, and decreasing on the intervals 
and 
.
C. ??The function is increasing on the interval 
, and decreasing on the intervals 
and 
.
D. ?The function is decreasing on the interval 
, and increasing on the intervals 
and 
.
E. ?The function is decreasing on the interval 
, and increasing on the intervals 
and 
.
Write using exponential notation.12 × 12 × 12 × 12 × 12
A. 5 ? 12 B. 512 C. 5 × 512 D. 125