Attached solution and work.
Yea what she said was correct
Your choices are correct.
1. adding -3 to the function shifts its graph downward by 3 units.
2. 7^(2x) = (7^2)^x = 49^x
3. f(0) = -6; g(0) = -3, f(0) = 2×g(0)
The given expression is :
2xx+3-5(x-2)
We know that, 

Aleena expands 2xx+3-5(x-2) as 2x²+3-5x-10. She is mistaken because the sign before 10 should be +10 instead of -10. Hence, the correct expanded form is 2x²+3-5x+10. Hence, this is the required solution.
Given:
The fractions are:

To find:
The each fraction as the sum of a whole number and a fraction less than 1.
Solution:
The given fraction is
.



Therefore, the given fraction
can be written as
.
The given fraction is
.



Therefore, the given fraction
can be written as
.
The given fraction is
.



Therefore, the given fraction
can be written as
.