Kelly has a savings account with a beginning balance of $800. • She earns $340 a week at her job. How much is Kelly saving each week? • For 8 weeks, she puts 15% of her weekly earnings into the savings account. • Kelly makes 3 withdrawals of $45 each.

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?