Perform the indicated operation and, if possible, simplify. Assume that all variables represent positive real numbers. 
+
A. (4x + y4)
B. (4x3 + y4)
C. (4x + y12)
D. 4x
+ y4
Answer: A
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Solve the problem.The volume of a cylinder of radius r and height h is given by the polynomial V= ?r2h, where ? is an irrational number. Use 3.14 as an approximation for ?, and find the volume of a cylinder with a diameter of 6 inches and a height of 10 inches. Round to the nearest hundredth of an inch.
A. 282.60 in3 B. 376.80 in3 C. 565.20 in3 D. 1130.40 in3
Solve.In baseball, the average number of earned runs given up by a pitcher in 9 innings is the pitcher's earned run average (ERA). For example, if a pitcher allows 90 earned runs in 250 innings, his ERA is found by solving the proportion 
= 
. Find the ERA for a pitcher who gives up 99 earned runs in 229 innings. Round your answer to the nearest hundredth.
A. 20.82 B. 3.89 C. 11.00 D. 2.31
Write the expression in the standard form a + bi.
A. 1 + i B. -1 + i C. -1 - i D. -1 + 2i
Find the slope of the line that passes through the given two points. If the slope is undefined, state this.(2, -5) and (2, 3)
A. 2 B. Undefined C. 4 D. 8