Solve: A comparison of coffee prices at 4 randomly selected grocery stores in San Diego showed increases from  previous month of 12, 15, 17, and 20 cents for a 200-gram jar. Find the variance of this random sample of prices increase.

Which equation can be used to solve for the unknown number? seven less than a number is thirteen. n-7=13 7-n=13 n+7=13 n+13=7

Me d is also an option but i couldn't get it in the picture

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.