An elementary school teacher wants to know if problems on a math worksheet are too difficult for students. she solves the first and last problem in every row and finds two problems that would be difficult for her students. what is the sample in this situation?
a. every problem on the worksheet
b. every problem that she did not solve
c. the two problems that would be difficult for her students
d. the first and last problem in every row

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease