Answer:
40
Step-by-step explanation:
3x + 7y
Replace the letters with said numbers,
3(4) + 7(4)
Multiply,
12 + 28
And add!
40
Answer:

Step-by-step explanation:
The angle sum of a pentagon is 540°
Using this and the angles we know, we can create an equation.

Answer:
x=24
y=144
Step-by-step explanation:
y= 144(corresponding angle)
y =(x+12) ( straight angle)
Answer:
no
no
no
yes yes
Step-by-step explanation:
not 100% but it should be right
Answer:
D
Step-by-step explanation:
Plug in and see.
Check A: Lets plug in (0,3) into y<2/3 x+2.
3<2/3 (0)+2
3<2 is not true so not A
Check C: Lets plug in (3,5) into y<2/3 x+2.
5<2/3 (3)+2
5<2+2
5<4 is not true so not C
Check B: Lets plug in (-3,1) into y<2/3 x+2.
1<2/3 (-3)+2
1<0 is not true so not B
Check D: Lets plug in (1,2) into y<2/3 x+2.
2<2/3 (1)+2
2<2/3+2 is true so D