-10 - (-2)(3 - 8) + 4
A. -16
B. 64
C. -24
D. 44
Answer: A
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Solve the problem.The formula v = 
can be used to estimate the speed of a car, v, in miles per hour, based on the length, L, in feet, of its skid marks upon sudden braking on a dry asphalt road. If a car is involved in an accident and its skid marks measure 45 feet, at what estimated speed was the car traveling when it applied its brakes just prior to the accident?
A. 40 mph B. 35 mph C. 25 mph D. 30 mph
Determine whether the equation is linear. If it is linear, give values for a and b so that the equation can be written in the form ax + b = 0.8x2 - 12 = 9
A. Yes; a = 8, b = -21 B. Yes; a = 21, b = 8 C. Yes; a = 8, b = -3 D. No
Factor the polynomial completely.16x2 - 81
A. (4x + 9)(4x - 9) B. (16x + 1)(x - 81) C. (4x + 9)2 D. (4x - 9)2
Find the product.(x - 4.7)(9x + 0.4)
A. 9x2 + 41.9x + 1.88 B. 10x2 - 41.9x + 4.3 C. 10x2 + 41.9x - 4.3 D. 9x2 - 41.9x - 1.88