X = 0.4/3
x = 13
if answer is wanted in decimal form.
Answer:
Step-by-step explanation:
The general exponential function is,
The points given in the table are,
Putting 
in the general equation, we get
And
Putting the value of a,
Now the exponential function becomes,
The work is down below but then the answer would be -2.25>e>-2.75
Answer:
m=1/3
Step-by-step explanation:
so find slope do this
(y^2-y^1)/(x^2-x^1)
so
(1+2)/(-3-6)
1/3
Answer:
She started with 8.90
Step-by-step explanation:
Let m = money
She spent 1/2 on a book
m - 1/2 m
This is what she has left after buying her book
Now she buys a pen at 1.25
m-1/2m - 1.25
This is how much she has left after buying the pen
The problem states that she has 3.20 left
3.20 = m-1/2m - 1.25
Combine like terms
3.20 = 1/2 m - 1.25
Add 1.25 to each side
3.2+1.25 = 1/2m -1.25 +1.25
4.45 = 1/2m
Multiply by 2
2*4.45 = 1/2m*2
8.90 = m
She started with 8.90
