Question

from 1970 to 2011, housing prices increased by an annualized rate of 4.89%. The median price for a house in 1970 was about $27000. what is the median price for a house in 2011?

Answer 1

ok so it is 41 years later, use
\[27000\times (1.0489)^{41}\] with a calculator

Answer 2

i get \[\$191,188.28\] rounded

Answer 3

omg, so far you have gotten all the right answersssss. Ahhhh how are you sooo smart hah

Answer 4

lol

Answer 5

how about 5^(x-3)=137

Answer 6

\[x-3=\frac{\ln(135)}{\ln(5)}\]
\[x=\frac{\ln(135)}{\ln(5)}+3\]

Answer 7

hold on typo there

Answer 8

\[x=\frac{\ln(137)}{\ln(5)}+3\]

Answer 9

how do you know when to use ln, and when to use log

Answer 10

3^(x/7)=0.2another one lol

Answer 11

ok if i see
\[b^x=A\] and i want x, i write
\[x=\frac{\ln(A)}{\ln(b)}\] the log of the total divided by the log of the base.

Answer 12

guess what?
\[\frac{x}{7}=\frac{\ln(.2)}{\ln(3)}\] just like above

Answer 13

how do you get rid of the 7 though

Answer 14

i got -10.254. is that correct?