Michael started a savings account. After 4 weeks, he had $350 dollars and after 9 weeks, he had $412.50. What is the rate of change of money in his savings account per week?

Empty box + box + empty box fill in the box is equal to 30 how

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?