Gloria has a lunch account in the school cafeteria. the balance, f(x), in her account can be represented by the function f(x) = –1.50x + 40, where x is the number of meals purchased. suppose –1.50 changed to –2.75. what does this mean in the context of the problem?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%