Answer:
-31
Step-by-step explanation:
5 - (4 + 2)^2 = -31
Answer:
They practiced a total of 75 math facts in all!
60 + 15 = 75 :D
Answer:
11. 10x^2 - 13x - 3
12. 5x^2 + 18x + 5
Step-by-step explanation:
11. Product means multiplication, so you can multiply (5x + 1) and (2x - 3).
- Using the FOIL (First+Outer+Inner+Last)
So: 
12. 
(So, you distribute the 2 to x^2 + 5x + 30, then combine like terms).
Hopefully, this helped you. Good luck & have a good day!
Rectangular implies the area to be length times height
let height=x
let width=2 more than the height or Length=2+x
Area=F(x)=(2+x)(x)=2x+x^2
f(x)=x^2+2x
****************To Answer your Additional question
You see the standard price is $100 for any mural, And also charges $40 per square foot.
So to show you the approach, Lets say that a mural of 1 square feet needs to be painted, then the charge will be $100 plus the $40 for every square feet, then it will be 100+40(1 square feet)=$140.
The problem asks for the charge of mural whose area is x, so lets do the same thing.
$100+40(x square feet)=100+40x and that is the function that gives the price of mural with an area of x.
so, g(x)=100+40x
