What is the determinant of k =[ 6 8] [ 03] –18 –8 10 18

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17