Determine the x- and y-intercepts of the graph of the quadratic equation.y = -x2 + 2x + 8
A. x-intercepts: -4, 4; y-intercept: 8
B. x-intercepts: -4, 2; y-intercept: 8
C. x-intercepts: -2, 2; y-intercept: 8
D. x-intercepts: -2, 4; y-intercept: 8
Answer: D
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Find the slope of the curve at the given point P and an equation of the tangent line at P.y = x2 + 11x - 15, P(1, -3)
A. slope is 
; y = 
+ 
B. slope is 13; y = 13x - 16
C. slope is - 
; y = - 
+ 
D. slope is -39; y = -39x - 80
Find the average of the list of numbers.81, 75, 67, 71, 81
A. 67 B. 74 C. 75 D. 81
Find the equation of the parabola with vertex at 
and focus at 
. Express the equation in standard form.
What will be an ideal response?
Solve the problem.A contractor is considering a sale that promises a profit of $30,000 with a probability of 0.7 or a loss (due to bad weather, strikes, and such) of $4000 with a probability of 0.3. What is the expected profit?
A. $21,000 B. $23,800 C. $19,800 D. $26,000