Answer:

$88,382.67

Explanation:

Here is the complete question:

Sally makes deposits into a retirement account every year from the age of 30 until she retires at age 65.If Sally deposits $1200 per year and the account earns interest at a rate of 4% per year, compounded annually, how much will she have in the account when she retires?

To calculate the future value of the annuity, we use this formula: amount x annuity factor

Annuity factor = {[(1+r) ^N ] - 1} / r

Amount = $1200

R = interest rate = 4%

N = number of years = 35

=( 1.04^35 - 1) / 0.04 = 73.652225

73.652225 × $1200 = $88,382.67

I hope my answer helps you

I’m pretty sure it’s debug!

Firm's maximum **profits **are 40

Profit = revenue - cost

Revenue = price x quantity = 40 x quantity

Cost = 60 + 4 x quantity x quantity

So you have:

P = 40 x Q - 60 - 4 x Q x Q

To get the maximum value for P with respect to Q, differentiate and set it to 0.

That is, set dP/dQ = 0 and solve for Q.

Since P(Q) is quadratic, dP/dQ is linear, so solving dP/dQ = 0 is easy and there is one solution.

Q=5

revenue = 5 x 40 = 200

cost = 60 + 4 x 5 x 5 = 60 + 4 x 25 = 160

**Profit **= 200 - 160 = 40

Learn more about **Profit **here: brainly.com/question/19104371

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