Olivia spent $20.00 on pencils and pens. Each pencil cost $2.00, and each pen cost $2.50. Which equation represents the number of pencils, x, and the number of pens, y, Olivia could have bought?x+y=20

x + y = 20 ,

x+y=4.50

x + y = 4.50 ,

2x+2.50y=20

2 x + 2.50 y = 20 ,

2.50x+2y=20

2x + 2.50 y = 20

Step-by-step explanation:

pencil =x, pen =y

Each pencil cost $2.00, and each pen cost $2.50.

                           x * 2       +        y * 2.50 =

Olivia spent $20.00 on pencils and pens.                      

2x + 2.50 y = 20

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743