Evaluate the expression using the given values.x + 13y
x = 5, y = -2
A. 18
B. 3
C. -21
D. 63
Answer: C
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Find (f ?g)(x) for the given functions f(x) and g(x).f(x) = x + 6 and g(x) = 8x - 4
A. 9x + 2 B. 7x + 10 C. 8x + 2 D. 8x + 44
Approximate the value using a calculator. Express answer rounded to three decimal places.2.3?
A. 13.690 B. 7.226 C. 13.914 D. 36.462
Use the discriminant to determine whether the solutions for the equation are two rational numbers, one rational number, two irrational numbers, or two nonreal complex numbers. Do not actually solve.s2 - 3s + 2 = 0
A. one rational number B. two rational numbers C. two nonreal complex numbers D. two irrational numbers
Find the center and radius and draw the graph.(x - 5)2 + (y - 3)2 = 25
A. 
center (-5, 3); radius 5
B. 
center (-5, -3); radius 5
C. 
center (5, -3); radius 5
D. 
center (5, 3); radius 5