The average of two numbers is 10. What is the sum of the two numbers?

he two tables below show the amount of tip, y, included on a bill charging x dollars. A 2-column table with 3 rows titled Restaurant A. Column 1 is labeled x with entries 10, 20, 30. Column 2 is labeled y with entries 1, 2, 3.

A city's population in 2000 was 152,920. If the population increases at an annual rate of 11 percent, when will the population reach 500,000? The equation given is y = a (1 ± r) ^t

At the beginning of a population study, a city had 370,000 people. Each year since the population had grown by 7.9%. Let t be the number for years since start of the study. Let y be the city's population.

P is 9 more than half of q

Every 24 hours, Earth makes a full rotation around its axis. Earth's speed of rotation at the equator is 1,670 km per hour.

Change the following numbers into percent 0.05

Calculate the discriminant: 5x² + 2x - 2 = 0

The Taco Shop sold 198 lunches Friday. This number is 3 more than 3 times the number they sold Monday. Let n represent the number of lunches sold Monday.

Susan received a $90 gift card for a coffee store she used it buying some coffee that cost $8.66 per pound after buying the coffee she had $64.02 left on a card how many pounds of coffee does she buy?

How many edges does a 3D pentagon have