What is x^5 times x^2 without exponents

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

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