Perform the desired operation. Write the answer in the form a + bi.(9 + 8i)(9 - 8i)

A. 81 - 64i2
B. 145
C. 81 - 64i
D. 17

Answer: B

Mathematics

Solve and graph the inequality. Give answer in interval notation.8 + 6x + 2 ? 5x + 7

A. (6, ?)

B. (-?, -3]

C. (-?, 6)

D. [-3, ?)

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Mathematics

Solve the problem.A chemical solution contains 1% salt. How much salt is in 2.5 mL of solution?

A. 0.025 mL B. 0.25 mL C. 25 mL D. 250 mL

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Mathematics

Write the first four terms of the sequence.an =

A. a₁ = 2, a₂ = - 1, a₃ = , a₄ =
B. a₁ = 2, a₂ = 1, a₃ = , a₄ =
C. a₁ = -2, a₂ = - 1, a₃ = , a₄ =
D. a₁ = -2, a₂ = 1, a₃ = , a₄ =

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Mathematics

Divide.

A. 3r9 - 5r6 B. 3r8 - 5r5 C. 24r7 - 40r4 D. 3r7 - 5r4

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Mathematics