Evaluate the expression 3x+2y when x is equal to 4 and y is equal to 2.4

16.8

Step-by-step explanation:

3x + 2y

x = 4 and y = 2.4

//replace x and y with it's value and combine like terms.

3(4) + 2(2.4)

12  + 4.8

16.8

practice. practice. practice.

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

read more on -

step-by-step explanation: