# Current Problems of the Week

## PrimaryAt the Fair
- September 11
How can you get 45 points to win the prize? |
## AlgebraKristina's Code
- September 18
Use the four equations that Kristina wrote to figure out her two unknown numbers. |

## Math FundamentalsSports Weigh In
- September 18
Find the weight of the soccer ball, the tennis ball, and the baseball. |
## GeometryCongruent Rectangles
- September 11
Seven congruent rectangles are arranged to form a larger rectangle. Given the area of the larger rectangle, find its perimeter. |

## Pre-AlgebraBuying Cola
- September 11
Where should Chuck shop to get the most cola? Is this the best buy? |
## Trig & CalculusIs It a Midpoint?
- September 18
Can you prove that what's happening in this picture will always happen with any cubic function? |