Which expression can be used to find the total amount that must be repaid on a 1- year loan of d dollars with 4% simple interest rate

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.