Claire went to Chilies for lunch. She spent $16.20 on her meal. If she leaves a 15% tip, how much will the tip be in dollars and cents? Type your answer as numbers and a decimal only, NO DOLLAR SIGN. Separate Question

Jessica bought 5 notebooks for $2.50 each and 3 packs of pencils for $3.25 each. How much was her total before tax? Type your answer in as numbers and a decimal only. NO DOLLAR SIGN.

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.