Wamart is selling a pack of 15 pens for 8.89. shopko has the same brand of pens that is an 8 pack for 4.90. which is the better buy?

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

Divide. write in the simplest form. 4 1/6 divided by 10

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?