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.
Answer:
A
Step-by-step explanation:
Use the formula rise/run. The rise, in this case, was 3 and the run was 1. There for it would be 3/1 which is simplified to 3.
Answer: -44.4°F
Step-by-step explanation:
17,750-8500=9,250
9250/1000=9.25
9.25x-4.8=-44.4
Assuming that each of these letters are splitting this half and half (based off of the information given here) then AB would be 9.4