El burrito wants to estimate the average weight of the grande bean burrito to within .05 lb with 95% confidence. using the sample standard deviation as an estimate of the population standard deviation, how large must the sample be to achieve this margin of error?

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.