Jess spent $20.00 for 4 pens and 2 notebooks. jess uses a coupon for $10.00 off her purchase. how much were the pens and notebooks?

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

What term best describes a line and a point that lie in the same plane? a. congruent b. coplanar c. collinear d. equal

Explain how you can use the associative property to evaluate (7x50)x4.