Solve the problem.Police use a formula s = S 
, where S is the test-car speed and L is the test-skid length, to find the actual speed s in an accident which left a skid mark of l. Find the actual speed (nearest whole mph) when 
A. 95 mph
B. 55 mph
C. 37 mph
D. 68 mph
Answer: B
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Find the slope of the line that passes through the given points.(-8, -6), (-3, 1)
A. -5
B. 
C. 
D. Undefined
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = - 
, 
< ? < 2?Find cos(2?).
A. 
B. - 
C. 
D. - 
Solve the problem.A baseball pitcher throws a baseball with an initial speed of 138 feet per second at an angle of 20° to the horizontal. The ball leaves the pitcher's hand at a height of 4 feet. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the maximum height of the ball?
A. x = 129.68t, y = -16t2 + 47.2t + 4 5.725 sec, 1.475 sec, 282.48 feet B. x = 129.68t, y = -16t2 + 47.2t + 4 2.863 sec, 1.475 sec, 3.985 feet C. x = 129.68t, y = -16t2 + 47.2t + 4 6.065 sec, 1.475 sec, 34.81 feet D. x = 129.68t, y = -16t2 + 47.2t + 4 3.032 sec, 1.475 sec, 38.81 feet
Factor the difference of squares.121mn4 - 121mp2
A. 121(mn2 + p)(mn2 - p) B. 121m(n2 + p)(n2 - p) C. m(11n2 - p)(11n2 + p) D. 121m(n2 - p)2