Is this expression contain a variable?

7+15n

A square that is 25 centimeters on each side

Magic Door Company has a net income before taxes of $50,000. The company's treasurer estimates that 35% of the company's net income will go to federal and state taxes. How much will Magic Door have left?

The function below models the correlation between the number of hours a plant is kept in sunlight (x) and the height (y), in mm, to which it grows: y = 2 + 4x What does the y-intercept of this function represent?

What is 1km=0.6mi 5km=?

What is the place value of 8 in 28175

How to convert millimeters to centimeters by dividing

Which of the following is an extraneous solution of square root - 3x-2=x+2? a) x = - 6 b) x = - 1 c) x = 1 d) x = 6

The measure of angle c is 70°. What is the measure of angle b

Why is 4 a natural number?

Students at university x must be in one of the class ranks, freshman, sophomore, junior, or senior. at university x, 35% of the students are freshmen and 30% are sophomores.