Write the expression in the standard form a + bi.7(4 - 3i)

A. 28 + 21i
B. 4 - 21i
C. 28 - 21i
D. 28i - 3i


Answer: C

Mathematics

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Solve the problem.Suppose that f(x) = 4x + 3. What is f(5)? What point is on the graph of f?

A. 1024; (3, 1024) B. 1024; (5, 1024) C. 1027; (5, 1024) D. 1027; (5, 1027)

Mathematics

Find the perimeter.A lot has sides measuring 5, 5, 3, and 4 yards.

A. (104 + 20) yards
B. (72) yards
C. (52 + 20) yards
D. (52 + 20) yards

Mathematics

Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.15z2 - 4z - 4

A. (3z + 2)(5z - 2) B. (15z - 2)(z + 2) C. (3z - 2)(5z + 2) D. prime

Mathematics

Provide an appropriate response.On the given graph of y = sec x sketch the graph of y = sec-1 x as defined in the text. Give the domain and the range.

What will be an ideal response?

Mathematics