Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = x3 + 8x2 + 20x + 16
A. 2, crosses the x-axis;
-2, touches the x-axis and turns around;
-4, crosses the x-axis.
B. -2, crosses the x-axis;
-4, touches the x-axis and turns around
C. 2, crosses the x-axis;
-2, crosses the x-axis;
-4, crosses the x-axis.
D. -2, touches the x-axis and turns around;
-4, crosses the x-axis.
Answer: D
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Solve.Lew is installing an invisible fence in his back yard which measures 109 feet by 68 feet by 89 feet by 99 feet. How many feet of wiring is needed to enclose his yard?
A. 375 ft B. 385 ft C. 355 ft D. 365 ft
Suppose ABC is a right triangle with sides of lengths a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the value of the indicated trigonometric function of the given angle. Rationalize the denominator if applicable.Find sin A when b = 33 and c = 55
A. 
B. 
C. 
D. 
Solve the quadratic inequality. Express your solution on a number line using interval notation.3x2 + 2x - 8 ? 0
A. (-?, -2] ? 
B. 
C. [-2, ?)
D. 
Find the maximum and minimum values of the function and the values of x and y for which they occur.Q = 2x + 5y, subject to3x + 2y ? 6,-2x + 4y ? 8,x ? 0,y ? 0.
A. Maximum: 13
when x = 
and y = 
; minimum: 0 when x = 0 and y = 0
B. Maximum: 12
when x = 
and y = 
; minimum: 0 when x = 0 and y = 0
C. Maximum: 10 when x = 0 and y = 2; minimum: 0 when x = 0 and y = 0
D. Maximum: 12
when x = 
and y = 
; minimum: 4 when x = 2 and y = 0