Simplify the following expression:
a + 2c - 5b - c + a - b

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

The pyramid shown has a square base that is 24 centimeters on each side. the slant height is 16 centimeters. what is the lateral surface area?