Find the difference.

(7x2 + x + 9) - (3x2 + 4x - 5)

Huilan is years younger than Thomas. The sum of their ages is 81. What is Thomas's age?

In 1850, a person sold a house to a lady for $30. If the lady had put the $30 into a bank account paying 4% interest, how much would the investment have been worth in the year 2010 if interest were compounded in the following ways?

A circle with a radius of 1 unit

A straight path that has a beginning and an ending

Marie's watering can is initially filled with 2 litres of water. However, the watering can has a small hole in the base and is leaking at a rate of 0.4 litres per minute. A. Write a rule for the volume of water, V litres, in the can after t minutes.

a snail moves at a speed of 2.394 inches per minute. if the snail keeps moving at this rate about how many inches will it travel

if it is 5 degrees outside and the temperature will drop 17 degrees in the next 6 hours how cold will it get

What does x + 24 = - 56 equal

Find the 25th term of the arithmetic sequence when a1 = - 14 and d = - 5

What is the word form of 1.015