Question

help with inverse? find inverse of A(t)= 75-14ln(1+t)?

Answer 1

14ln(1+t) = 75 - A
ln(1+t) = (75-A)/ 14
1+ t = e ^(75-A)/ 14
t = e ^(75-A)/ 14 - 1

inverse A(t)-1= [ e ^(75-t)/ 14) ]- 1

Answer 2

along with that I am confused on how to find t if A(t)=50?

Answer 3

ok use t = e ^(75-A)/ 14) - 1
= e^((75-50)/ 14) - 1
= e^(25/14) - 1
= 4.964 to 3 dec. places

Answer 4

ohh okay thats why i didnt get that part. it makes sense now

Answer 5

fine