What is another name for mathematical rules

The Question is: Write 1/3 and 3/4 as a pair of fractions with a common denominator

Melisande collected 14 bottles on Saturday and 9 bottles on Sunday for recycling. On Monday, she took all the bottles to the recycling center, where they paid her a certain amount, b, for each bottle.

3x + 9b + 5ax + 15ab

Consider this scenario: A town has an initial population of 80,000. It grows at a constant rate of 1,500 per year for 5 years.

The perimeter of a rectangle garden is 43.8 feet. It's length is 12.4 feet. What is it's width?

What is the rule for 24, 48, 72,

Eight more then the number Let n represent an unknown number

Yoku Is putting on sunscreen. He uses 2 ml to cover 50 cm² of his skin. He wants to know how many milliliters of sunscreen he needs to cover 325 cm² of the skin.

Find the measures of

Which value of x makes this inequality true? X + 9 < 4x