Write the following in simplest form using positive exponents.
A. 
B. y9
C. y5
D. 
Answer: B
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Simplify, if possible, by combining like terms.9a + 7b + 4a
A. 13a + 7b B. 13a + 4b C. 13a + 7 D. 20ab
Solve the problem.A rectangle has a length of x + 5 and a width of x - 5 and has an area of 56 square units. Find the length and width of the rectangle. (A = LW)
A. width = 1 unit; length = 56 units B. width = 7 units; length = 8 units C. width = 2 units; length = 28 units D. width = 4 units; length = 14 units
Solve the problem.The formula 
models the safe maximum speed, v, in miles per hour, at which a car can travel on a curved road with radius of curvature, r, in feet. A highway crew measures the radius of curvature at an exit ramp as 160 feet. What is the maximum safe speed?
A. 17 miles per hour B. 16 miles per hour C. 25 miles per hour D. 20 miles per hour
Find the equation of the line described, and express your answer in the specified form.Perpendicular to the line y = 7; passes through the point (8, 1); standard form
A. x = 1 B. y = 1 C. x = 8 D. y = 8