Three times the difference of a number and nine.

Graph 7x-3y=-21 I am working on graphing

Convert 166.47 ft2 to square inches

There are 31 fish in a tank. The fish are either orange or red. there are 17 more orange fish. How many fish are orange? How many fish are red? Define the variables, write and solve the system of linear equations.

A triangle has an area of 45 square units. Its height is 10 units. What is the length of its base

4 times what equals 36

If 15% of 200 apples or bad how many apples are bad

A hot air balloon holds 2,200 cubic meters of helium. The density of helium is 0.1785 kilograms per cubic meter. How many kilograms of helium does the balloon contain, rounded to the nearest tenth of a kilogram?

Find the area of the triangle in square units Pythagorean theorem. A triangle with a base of 9 units and a height of 22 units?

At a concert 20% of the people are wearing black dresses or suits, 1/4 are wearing navy, 0.35 are wearing brown, and the rest are wearing a variety of colors.

Solve the inequality 7a + 13 < 48. A. a = 5 B. a ≤ 5 C. a 5