ExpLog-answers

Solutions to the Sample Problems from Unit 9: Exponentials & Logarithms
(click here to return to the problem set)
 * 1) use the division rule and then rewrite the log in exponential form. x= -7/3 (I got x = -21/8. so did wolfram alpha)
 * 2) logbase5(23)=x, therefore x=1.948
 * 3) x=125
 * 4) y=6437*2^(10/7)
 * 5) Exponential's have a horizontal asymptote and Logarithms have a vertical asymptote.
 * (x, ln(y))
 * 1) (logx, logy)
 * 2) use the rule that KlogA = KlogA^K when the bases are the same. logm^24=4, m=6th root of 10
 * 3) y = 150(.8)^6 --> 39 whales (round down)
 * 4) 5^4=625 and 5x=625 so x=125