Simplify. Remember that we have assumed that radicands do not represent the square of a negative number.
A. (4x + 3)2
B. none of these
C. 4x + 3
D. 
Answer: C
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Use the table of values of f to estimate the limit.Let f(x) = x2 - 5, find 
f(x).
A. 
; limit = -15.0
B. 
; limit = -5.0
C. 
; limit = -3.0
D. 
; limit = ?
Solve the given differential equation.D4y + 5 D3y - 9 D2y - 45 Dy = 0
A. y = C1 + C2e3x + C3e-3x+ C4e-5x B. y = C1 + C2e3x + C3e-3x + C4e5x C. y = C1e3x + C2e-3x + C3e5x D. y = C1e3x + C2e-3x+ C3e5x
Use the square root property to solve the equation.(4x + 3)2 = 6
A. 
B. 
C. 
D. 
Solve the problem.In a 1-mile race, the winner crosses the finish line 15 feet ahead of the second-place runner and 28 feet ahead of the third-place runner. Assuming that each runner maintains a constant speed throughout the race, by how many feet does the second-place runner beat the third-place runner? (5280 feet in 1 mile.)
A. -13.07 ft B. -15.08 ft C. -2.01 ft D. 13.04 ft