Write the given expression in statement:

$2y-5$

A situation is given below. State the number in the situation is a variable or a constant.

The number of days in the month of January.

A situation is given below. State the number in the situation is a variable or a constant.

The temperature of a day.

A situation is given below. State the number in the situation is a variable or a constant.

Length of your classroom.

A situation is given below. State the number in the situation is a variable or a constant.

Height of a growing plant.

In the expression given below identify all the terms.

$5x^2+3y+7$

In the expression given below identify all the terms.

$5x^{2}y+3$

In the expression given below identify all the terms.

$3x^{2}y$

In the expression given below identify all the terms.

$5x-7$