Perform the indicated operation.27.9% + 16%
A. 12.1%
B. 43.9%
C. 12.2%
D. 44%
Answer: B
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Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.cos 78°
A. -0.91 B. 0.21 C. 0.16 D. -0.86
Solve the problem.If a plot of land contains a rectangular array of 160 strawberry plants, how many rows are in the array if there are 40 plants in each row?
A. 30 B. 40 C. 9 D. 4
Solve.A box is constructed by cutting out square corners of a rectangular piece of cardboard and folding up the sides. If the cutout corners have sides with length x, then the volume of the box is given by the polynomial 
Factor out the greatest common factor for this expression.
A. 4x(x2 - 18x + 45) B. 4(x3 - 18x2 + 45x) C. 4x(x2 + 18x + 45) D. 2x(2x2 - 36x + 90)
Simplify the expression. Assume that all variables represent nonnegative real numbers.
- 3
- 2
A. -4
B. 
- 7
C. 5
x
D. -4