Evaluate the polynomial.-7x + 3, when x = 2
A. -11
B. -4
C. -17
D. -28
Answer: A
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The length of skid marks when a car skids to a stop is a power function of the speed the car is traveling when brakes are applied. The value of the power in this function is 
. If the skid length is doubled, how is the speed affected? Round your answer to two decimal places if necessary.
?
A. Speed is multiplied by 4. B. Speed is multiplied by 1.52. C. Speed is multiplied by 1.41. D. Speed is multiplied by 4.64.
Use the fundamental identities to find the value of the trigonometric function.Find cos ? if sin ? = - 
and ? is in quadrant III.
A. - 
B. 
C. - 
D. - 
Use a power-reducing identity to find the exact value of the expression.sin2 (105°)
A. 
B. 
C. 
D. 
Find the slope-intercept form for the line that satisfies the stated conditions.x-intercept 4, y-intercept - 
A. y = 
x - 
B. y = 
x - 
C. y = - 
x - 
D. y = 40x - 2