Question

If y=4(1.6)^x , what is the approximate value of x when y = 12?
Answer
a. 2.1
b. 1.9
c. 2.5
d. 2.3

Answer 1

y=4(1.6)^x and y =12
12 = 4(1.6)^x
3=1.6^x
xlog(1.6) = log3
x = log3 / log1.6 =?

Answer 2

b?

Answer 3

Nope :|

Answer 4

thats what i got when i typed it in what u get?

Answer 5

x=(log3) / (log1.6)

Answer 6

just plug the answers they gave you in for x and when you get 12 as your answer, that is the x....does that make sense

Answer 7

12=4(1.6)^x
a. 2.1=x
b. 1.9=x
c. 2.5=x
d. 2.3=x

Answer 8

so C

Answer 9

so which is it one of your answers is c and the others is d

Answer 10

Actually, instead of putting the value into the equation provided, you can solve it :|

Answer 11

either way, that's what i do on tests...just so i make sure i get the right answer...ha sorry if i made more work for you :/