Use the coordinates of the indicated points to find the slope of the line.
A. - 
B. 3
C. 
D. -3
Answer: B
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Find an equation of a parabola satisfying the given conditions.Find the equation of the parabola with vertex at the origin and axis along the y-axis if the parabola passes through the point 
A. y2 = 
x
B. x2 = 
y
C. y2 = 8x
D. x2 = 8y
Factor the special products, which are the sum or difference of two perfect cubes.64p3 + 1
A. (64p + 1)(p2 - 4p + 1) B. (4p + 1)(16p2 - 4p + 1) C. (4p + 1)(16p2 + 1) D. (4p - 1)(16p2 + 4p + 1)
Compute the product, expressing the answer in lowest terms.
× 
A. 
B. 
C. 
D. 
Solve the problem.The polynomial function I(t) = -0.1t2 + 1.8t represents the yearly income (or loss) from a real estate investment, where t is time in years. After how many years does income begin to decline? Round to the nearest tenth of a year, if necessary.
A. 18 years B. 9 years C. 8 years D. 12 years