Why are variables used in math? They represent something in the real word or an unknown.

Variables are added to make math problems more complicated.

They make math problems more interesting.

Variables represent the numbers the problem tells you.

2 apples

step-by-step explanation:

taking away equals subtraction. 6-4=2

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)

the olimpics is not going to wokk out

step-by-step explanation:

for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a