Hello, Could someone help me with the following problems please and show work?

Hello,

Could someone help me with the following problems please and show work?

thanks!

Solve for x

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Find the present value that will grow to $45,000 if interest is 3.6% compounded monthly for 1 year.

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(Modeling) A virgin forest in northwestern Pennsylvania has 4 species of large trees with the following proportions of each:

Hemlock, .521      beech, .324       birch, .081     maple, .074

Find the measure of diversity H to the nearest thousandth.