There are 67 bikes in the bike rack outside a school. Out of all the bikes, 33 are silver. Half of the remaining bikes are red.
Estimate how many bikes are red.

Don't know how to find x given these segment lengths

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?