Subtract. Simplify, if possible.23 - (-6)
A. 29
B. -17
C. -29
D. 17
Answer: A
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Use the 68-95-99.7 rule to solve the problem.The annual precipitation for one city is normally distributed with a mean of 25.8 inches and a standard deviation of 2.9 inches. Fill in the blanks.In 99.7% of the years, the precipitation in this city is between ___ and ___ inches.
A. 17.1, 34.5 B. 20, 31.6 C. 20, 25.8 D. 25.8, 34.5
Find a set of polar coordinates for the point for which the rectangular coordinates are given.(-4
, 4)
A. 
B. 
C. 
D. 
The data table has been generated by a linear, quadratic, or cubic function f. All zeros of f are real numbers located in the interval 
By making a line graph of the data, conjecture the degree of f.
A. 1 B. 2 C. 3 D. 4
Write the expression as a complex number in the form a + bi.
A. 0 + 2i B. 2 + 0i C. 0 - 2i D. -2 + 0i