Solve the problem.The total resistance in this electric circuit is given by the formula below. Find the total resistance for , ,  ohms.Total resistance =  .

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A. 8.50 ohms
B. 7.10 ohms
C. 5.48 ohms
D. 10.60 ohms

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Answer: B

Mathematics

Solve.From a 38-inch by 38-inch piece of metal, squares are cut out of the four corners so that the sides can then be folded up to make a box. Let x represent the length of the sides of the squares, in inches, that are cut out. Express the volume of the box as a function of x.

A. V(x) = 4x3 - 152x2 + 1444x B. V(x) = 4x3 - 152x2 C. V(x) = 2x3 - 114x2 D. V(x) = 2x3 - 114x2 + 38x

Solve the equation (x in radians and ? in degrees) for all exact solutions where appropriate. Round approximate answers in radians to four decimal places and approximate answers in degrees to the nearest tenth.2 sin2 x + sin x = 1

A.
B.
C.
D.

Find the largest open interval where the function is changing as requested.Decreasing f(x) = x3 - 4x

A.
B.
C.
D.

Multiply. Write a mixed numeral for the answer.3 ? 3

A. 11 B. 7 C. 9 D. 12