13x - 51

10x - 33

find bc

9/18 : 3/6 = Worth 94pts

A 9 -foot board is cut into two pieces. If one piece is x feet long, express the other length in terms of x.

What is the translation for the expression x-5

Solve the equation: 5x^2-3x=2x^2+x

List these numbers in order from greatest to least 90,048 93, 405, 90 543

Nine times a number increased by 21 is no more than twice the number

Manny and Susan have an egg carton full of eggs to use for their science project. Manny uses 1/3 of the eggs and Susan uses 1/2 of the eggs. Which fraction of the eggs did Manny and Susan use for their project?

Calculate the area and volume of the ball of radius: a) r = 4 cm; b) √3 cm

What is the sum of the interior angles in the polygon below? [asy] size (2.5cm); draw ((0,0) - - (3,-4) - - (5,2) - - (7,-1) - - (8,5) - - (4,9) - -cycle, linewidth (1.25)); [/asy]

Lynn, Faith, and Jermyn are film animators. In one 8-hour day, Lynn rendered 203 frames, Faith rendered 216 frames, and Jeremy rendered 227 frames. How many more frames per hour did Faith render than Lynn did?