I'm so confused. How do I figure out parts of the shelter without knowing one of them? (Picture attached)

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

What is the equation of a line passing through (-6,5) and having a slope of 1/3

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7