What is the sum of the interior angles of a nonagon?

Helene spends 12% of her budget on transportation expenses. Write this percent as a fraction and as a decimal. Solve: 12%=12/100=.12

12.5% of what number is 130.

A child has 48 quarters and 80 dimes. The child wishes to stack the coins so that each stack has the same number of coins, and each stack contains only one kind of coin. What is the largest number of coins that the child can place in each stack?

Each marble bag sold by Karen's Marble Company contains 3 blue marbles for every 5 yellow marbles. If a bag has 45 yellow marbles, how many blue marbles does it contain?

Solve this system of equations using substitution. a + b + c = 180 b = 3a c = 5a

A car travelled a distance of D = 199 km (kilometers) for T = 4.3 hours at a constant rate. Use the formula D=R. T to find the speed (R) of the car in km per hour. Round your answer to the nearest tenth. Do not include the units in your answer.

A car purchased for $21,000 was worth $8,500 after 5 years. If the cars value depreciated, or decreased, by the same amount each year, what was its yearly loss in value? At the end of the fourth year, the car was worth $?

A (n) = - 5 ∙ 3^ (x - 1)

Jessica drove her car 418 miles on one tank of gas. Her car a 15 gallon tank. How many miles can Jessica drive on one gallon of gas?

Inga can earn $575 per week in a plant store, or she can earn 4% of total sales. How much would Inga have to sell to earn more in commission than in salary?