The first one is for sure correct

Y = 5/2 x + 2

2 y = 5 x + 4 ( we will use the substitution method )

2 ( 5/2 x + 2 ) = 5 x + 4

5 x + 4 = 5 x + 4

0 · x = 0

x , y ∈ R

Answer : **C ) infinitely many solutions**.

**Answer:**

27x^6

**Step-by-step explanation:**

**Answer:**

1 hour

**Step-by-step explanation:**

180 / 12 = 15

*double check*

15 • 12 = 180

12 inches in 1 foot, multiply by 15 to get total square inches which gives you 180. Can paint 180 square inches in 1 hour.

X=10

First, remove the parentheses so it could turn into 150-2x-90=4x (the plus sign gets turned into a minus sign because of a certain rule.

Then do 150-90 which will result in 60-2x=4x.

Then subtract -4x on both sides. This will leave you with 60-6x=0.

Next, subtract 60 in both sides. This will leave you with -6x=-60.

Finally, divide by -6 on both sides. This will leave you with the answer x=10.