Find the focus and directrix of the parabola with the given equation.y2 = -5x
A. Focus: (-5, 0), directrix: x = 5
B. Focus: 
, directrix: x = 
C. Focus: 
, directrix: y = 
D. Focus: 
, directrix: x = - 
Answer: B
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Multiply.2(-5)
A. -10 B. 3 C. -3 D. 10
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
Consider the functions F and G as shown in the graph. Provide an appropriate response.Find the domain of F + G.
A. [-3,4] B. [-3,3] C. [-1,4] D. [-1,3]
Solve the problem.In baseball, a pitcher's earned-run average (the average number of runs given up every 9 innings, or 1 game) is given by E = 9 (n/i) , where n is the number of earned runs allowed and i is the number of innings pitched. Suppose we fix the number of earned runs allowed at 6 and let i vary.
Complete the following table, rounding to two decimal places. 
Find 
style="vertical-align: -25.0px;" />E(i).
On the basis of Parts (a) and (b), determine a pitcher's earned-run average if 
were allowed and there were 0 outs.
A. 
?; ?
B. 
162; 324
C. 
-?; -?
D. 
? ; 0