The cost of first-class postage in the United States increased approximately 5.4% in January of 2006 to 39 cents. What was the pre - January cost of the first-class stamp? Round your answer to the nearest penny.

Dy/dx = (x+1) 2 solve by seprable equation

Round 24,269 to the nearest thousand

Bruce wants to make sure that each tiger at the zoo has 1,000 square feet of space. He wants to write an equation to represent the relationship between the number of tigers, t, and the number of square feet of space, f.

What is the population mean or sample mean for 6,10,2,11,14,5

22 boxes packed in 1 5/6 hour what is the average number of boxes packed

A club decides to sell T-Shirts for 15$ as a fund-raiser. It cost $20 plus $9 per T-Shirt to make them. How many T-Shirts need to be made to make a profit of at least $150?

6y+9=3 (2y+3) what is the answer

A, B and C are coplanar. true false

True or False: If circumference of a circle is 12*3.14, then its area is 36*3.14.

Jessica wants to give a 20% tip to a taxi driver. if the fare is 23.78 what amount did she tip the driver