Answer:
2n^{2} +2n
INSERT
Step-by-step explanation:first you want to move the negative which is negative 1 into the set of parenthesis and then Foil the two parenthesis together and the combine like terms
I think it’s the last one I am not sure tho
If you simplify the expression you will get 18x - 15.
Answer:

Step-by-step explanation:
we have the ratio

To write as percent, multiply the ratio by 100
so

Answer:
The second statement is true.
Step-by-step explanation:
Draw the corresponding parabola and use it to verify all statements.