Phyllis has $1,400 in her savings account. If the bank pays 2.25% interest per year on savings, how much interest does she earn in one year?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)