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.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: