For the given functions f(x) and g(x), find (f + g)(x) or (f - g)(x) as indicated.f(x) = -7x + 2, g(x) = -5x + 7Find (f + g)(x).
A. -3x
B. -12x + 9
C. -5x + 2
D. -2x + 9
Answer: B
Mathematics
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Solve the problem.The surface area of a hollow cylinder (tube) is given by 
where h is the length of the cylinder and R1 and R2 are the outer and inner radii. If h, R1, and R2 are measured to be 9 inches, 3 inches, and 7 inches respectively, and if these measurements are accurate to within 0.1 inches, estimate the maximum possible error in computing S.
A. 12.57 B. 11.94 C. 17.59 D. 13.82
Mathematics
Divide, if possible. If the quotient is undefined, then state this.-57.4 ÷ 8.2
A. -7
B. - 
C. 
D. 7
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (-2)2(-2)3
A. -64
B. -32
C. 
D. 
Mathematics
Simplify.2.7 ? 17.6 + 12.1 ? 19.1
A. 1138.7 B. 671.5 C. 1531.6 D. 278.63
Mathematics