Rationalize the denominator and simplify. Assume all variables represent nonnegative real numbers.
A. 
B. 
C. 
D. 5x
Answer: C
Mathematics
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Solve the problem.Find (f?g)(4) when f(x) = 5x + 7 and g(x) = 5x + 6.
A. 53 B. 702 C. 141 D. 137
Mathematics
Fill in the blank with one of the words or phrases listed below. Not all choices will be used and some choices may be used more than once.
The expression a2 - b2 is called a 
.
A. perfect square trinomial B. difference of two squares C. difference of two cubes D. sum of two cubes
Mathematics
Write a formula for a linear function f whose graph satisfies the conditions.Slope: 
; y-intercept: -6
A. f(x) = 
x + 6
B. f(x) = - 
x + 6
C. f(x) = 
x - 6
D. f(x) = - 
x - 6
Mathematics
Match the equation of the parabola with the appropriate description.y + 10 = 2(x - 15)2
A. Vertex at (30, 10) B. Vertex at (-15, 5) C. Vertex at (-15, 10) D. Vertex at (15, -10)
Mathematics