Answer:
![3.5r-7](https://tex.z-dn.net/?f=3.5r-7)
Step-by-step explanation:
Both of the r's are like terms, so you can combine them:
![6.4r-7-2.9r](https://tex.z-dn.net/?f=6.4r-7-2.9r)
![(6.4r-2.9r)-7](https://tex.z-dn.net/?f=%286.4r-2.9r%29-7)
![3.5r-7](https://tex.z-dn.net/?f=3.5r-7)
Answer:
(b) f(x) = 12.5(1.6^x)
Step-by-step explanation:
An exponential model is generally of the form ...
f(x) = a·b^x
where 'a' is the initial value (for x=0), and 'b' is the growth factor, the multiplier when x increases by 1.
<h3>Growth factor</h3>
The ratio of the f(x) values for x=0 and x=1 is 20/12 ≈ 1.67. A number close to this will be the growth factor in the exponential function. There is only one answer choice showing a growth factor near 1.6. (Eliminates choices A, C, D.)
An exponential regression model can be produced by many graphing calculators and spreadsheets. The attachment shows a model that has the values matching choice B.
Answer:
the answer is$8
Step-by-step explanation:
20×4%= $0,8
0,8×10=$8
I’m not really sure if it correct, g(1)=0 or g(1)=1??