Juan has $90 in a savings account that earns 10% interest, compounded annually. To the nearest cent, how much will he have in 3 years?

Juan will earn $29.79

Step-by-step explanation:

Juan has 90 dollars in the savings account, and gets 10% interest. So you do 90 * 1.1, which is 99, then do 99 * 1.1, which is 108.9, and then finally you do 108.9 * 1.1 and you get $119.79.

ur mom

step-by-step explanation:

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752