2×5+(4×3)²-10²/2 following the order of operations what is the solution ​

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

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

Ineed to find the answer to number 2