Rewards for Problems of the week:
5 points for the correct answer at your level; 10 points for the next level; 20 points each for 2+ levels up.
Lower Elementary:
Question: Napoleon is practicing his tetherball skills. Every time he hits the ball, it takes 6 seconds to swing back around the pole. How many times can Napoleon hit the ball in 45 seconds?
Upper Elementary:
Question: Deb usually shoots glamour portraits for $26.00, but today they are discounted at 75% off. How much do glamour portraits cost today?
Middle School:
Question: Pedro is running for class president. Right now, one out of every twelve of the students in Pedro’s class plan to vote for him. He has one opponent and five weeks to campaign. If there are 144 students in his class, then how many more students does he need to convince to vote for him in order to win the election?
Algebra and Up:
Question: Rico throws a football into the air. The football’s height above the ground in meters after a given amount of time in seconds t can be found using the function f(t) = –5t² + 15t + 2. How long does the football stay in the air after Rico throws it? You may use your calculator. Round your answer to the nearest tenth of a second.
Challenge problem to take home. 20 points for the correct answer.
Find the sum of all prime numbers that are less than 100 and has a digit of 5.