MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. For the given functions f and g, find the requested function. 1) f(x) = x + 2; g(x) = 3x + 1 Find (f + g)(x). A) (f + g)(x) = 4x + 3 B) (f + g)(x) = 3x + 3 C) (f + g)(x) = 3×2 + 7x […]

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Find the products AB and BA to determine whether B is the multiplicative inverse of A. 1) A = , B = A) B ≠ A-1 B) B = A-1 2) A = , B = A) B = A-1 B) B ≠ A-1 3) A = , B = […]

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Use the partial sum formula to find the partial sum of the given arithmetic sequence. 1) Find the sum of the first five terms of the arithmetic sequence 9, 15, 21, . . . A) 45 B) 210 C) 75 D) 105 2) Find the sum of the first eight […]

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Use the product rule to multiply. 1) √(7)⋅√(11) A) 3√(2) B) 7√(11) C) 77 D) √(77) 2) (5)√(2)⋅(5)√(3) A) 6 B) 2(5)√(3) C) √(6) D) (5)√(6) 3) (8)√(3×6)⋅(8)√(2x) A) √(6×7) B) (16)√(6×7) C) 6(8)√(x7) D) (8)√(6×7) 4) √(x + 2)√(x – 2) A) x2 – 4 B) √(x2 – 4) […]

Find the horizontal asymptote, if any, of the graph of the rational function. 22) f(x) = (6x/2×2 + 1) A) y = 1/3 B) y = 3 C) y = 0 D) no horizontal asymptote 23) g(x) = (25×2/5×2 + 1) A) y = 1/5 B) y = 0 C) y = 5 D) no horizontal asymptote 24) h(x) = (6×3/2×2 + 1) A) y […]

Solve the problem. 241) How many litters of a 20% alcohol solution must be mixed with 50 liters of a 70% solution to get a 40% solution? A) 7.5 L B) 75 L C) 12.5 L D) 125 L 242) In a chemistry class, 7 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How […]

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Write the following as an equation, using x for the unknown number. Then solve. 1) Four times a number added to 9 times the number equals 65. Find the number. A) 4x(9 + x) = 65; 7.2 B) 4(x + 9) = 65x; 0.6 C) 4x – 9x = 65; […]

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Approximate the value using a calculator. Round your answer to three decimal places. Graph the function. 81) f(x) = log3x A) B) C) D) 82) f(x) = log1/4x A) B) C) D) 83) f(x) = log3(x + 2) A) B) C) D) 84) f(x) = log5x + 1 A) B) […]

Determine whether the lines through each pair of points are perpendicular. 21) ( -9, -8) and ( -5, 0); ( 5, -8) and ( 9, -6) A) perpendicular B) not perpendicular 22) ( 6, 2) and ( 0, 22); ( 13, 8) and ( 3, 5) A) not perpendicular B) perpendicular 23) ( -1, 0) and ( 15, 8); ( -7, 4) and ( 1, […]

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Decide whether the relation is a function. 1) {(-3, -6), (1, -5), (6, 9), (7, -8), (11, -3)} A) Function B) Not a function 2) {(-4, 1), (-3, -6), (3, -8), (3, 4)} A) Function B) Not a function 3) {(-8, 2), (-8, 8), (2, -8), (4, -7), (9, -2)} […]