Which element should be removed so that the sequence follows the rule? rule: divide the shaded square into 4 squares, then shade only the square in the top left corner. a. 2 b. 3 c. 4 d. 5

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of