Classify the expression: 5x + 2.

Linear expression

Quadratic expression

Cubic expression

Quartic expression

It is Linear expression

Answer:it is a linear expression

Step-by-step explanation:

Linear expressions or equations are expressions in which the highest power of the variable is one.

Quadratic expressions or equations are expressions in which the highest power of the variable is two.

Cubic expressions or equations are expressions in which the highest power of the variable is three.

Quartic expressions or equations are expressions in which the highest power of the variable is four.

From the expression, 5x + 2 given,

the highest power of x is one. So it is a linear expression.