Arrange the polynomial in descending powers of the variable. Then find its degree and leading coefficient.1 + 3x
A. 3x + 1, degree: 1, leading coefficient: 1
B. 3x + 1, degree: 0, leading coefficient: -3
C. 3x + 1, degree: 3, leading coefficient: 1
D. 3x + 1, degree: 1, leading coefficient: 3
Answer: D
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Multiply or divide as indicated. Make sure that your answer is reasonable by estimating first. 3.55 × 4
A. 7 B. 7.55 C. 14.2 D. 14
Solve the problem.If f(x) = 7x + 6 and g(x) = 7x2 - 3x + 5, find (fg)(x) and (fg)(0).
A. 49x3 - 21x2 + 17x + 30; 30 B. 49x3 + 21x2 + 17x + 30; 30 C. 49x3 + 21x2 + 17x; 0 D. 49x2 - 21x + 41; 41
Solve the equation.x2 + 7x - 18 = 0
A. x = -9, 1 B. x = -9, 2 C. x = 9, -2 D. x = 9, 2
Solve the problem.Given the following revenue and cost functions, find the x-value that makes profit a maximum. (Recall that profit equals revenue minus cost.) R(x) = 58x - 2x2; C(x) = 25x + 98
A. 8.25 B. 9.25 C. 14.5 D. 16.5