5. Mark is raising money for a charity. He makes either 18 phone calls per day or 10 home visits per
day. Mark wants to contact at least 100 people next
week (7 days). Which system of inequalities
represents this situation if x represents number of
days making phone calls and y is days of home visits?

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.