Evaluate the expression 2x+ y when x = 3. y=1.

2x+y+x=3+y=1

2x+x+y+y+3=1

2x+2y+3=1

2x+2y+3-3=1-3

2x+2y=-2

Step-by-step explanation:

We are given the expression

and asked to evaluate when x=3 and y=1. Therefore, we must substitute 3 in for x and 1 in for y.

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

Multiply 2 and 3.

Add 1 and 6.

The expression 2x+y evaluated at x=3 and y=1 is equal to 7.

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40