The formula s = a models the value of a retirement account, where a = the number of dollars added to the retirement account each year, r = the annual interest rate, and s = the value of the retirement account after t years. if the interest rate is 11%, how much will the account be worth after 15 years if $2200 is added each year? round to the nearest whole number.
a. $86,218
b. $168,418
c. $11,675
d. $35,200

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size.it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?