Find the product of 3/5x15

Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?

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

What is the value of x? assume that the line is tangent to the circle.