Tom sent an email to eleven friends and it took 4 3/4 minutes to type and send each one. How long did it take Tom to send all of his emails?

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