Solve the problem.Walt made an extra $10,000 last year from a part-time job. He invested part of the money at 7% and the rest at 6%. He made a total of $670 in interest. How much was invested at 6%?

A. $5000
B. $8000
C. $7000
D. $3000

Answer: D

Mathematics

Find dy.y = sec-1

A. -7x⁶sindx
B. e^x⁷x⁶sindx
C. 7e^x⁷x⁶sindx
D. -7e^x⁷x⁶sindx

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Mathematics

Divide. Be sure your answer is simplified.-5 ÷

A. -
B. -
C. -
D. - 10

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Mathematics

Write the expression as the sum or difference of single logarithms. log18

A. log₁₈7 - 2 log₁₈x - 2 log₁₈y
B. log₁₈7 - 2 log₁₈x - log₁₈y
C. 5 log₁₈7 - 2 log₁₈x - log₁₈5
D. log₁₈7 - log₁₈x - log₁₈y

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Mathematics

Add. Write a mixed numeral for the answer.4 + 5 +

A. 15
B. 13
C. 15
D. 592

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Mathematics