A restaurant is having a two-day competition to see which server can sell the most appetizers. On the first day, Jennifer sold 10\%10% more appetizers than Heidi. On the second day, Jennifer sold 66 appetizers, but Heidi was unable to sell any. Jennifer sold 40\%40% more appetizers than Heidi after the two days. How many appetizers did each server sell?

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?