a rare coin was bought for $30.00 2 years ago. It is now worth $75.00. What is the percent increase in worth?

A circular clock face has a diameter of 7 inches. what is the area of the clock face

What is 6 divided by 82

The velocity of a car was 30m/s when the driver pushed the brake of the car and it stopped after 2 seconds. Assume that the acceleration was constant during the braking time. find the acceleration and the distance cut during the braking

Which equation can be used to determine the distance between the origin and (-2, - 4) ? a. d = StartRoot ((0 minus 2) + (0 minus 4)) squared EndRoot b. d = StartRoot (0 minus (negative 2)) squared + (0 minus (negative 4)) squared EndRoot c.

What is the lowest score someone can get and still earn a certificate?

A radioactive substance decays exponentially. A scientist begins with 200 milligrams of a radioactive substance. After 17 hours, 100 mg of the substance remains. How many milligrams will remain after 23 hours?

Who let the dogs out

The cost of 13 credit hours was 1222 what did 11 credit cost

The water works commission needs to know the mean household usage of water by the residents of a small town in gallons per day. They would like the estimate to have a maximum error of 0.1 gallons.

What is the sum of the first five terms of the geometric sequence in which a1=10 and r=1/2? (Express your answer as an improper fraction using the slash (/) key and no spaces.)