Use the following diagram to answer questions 5-7 1) Tracy calculates the correlation and variance between the health care expenditures of a country and life expectancy. Given the diagram, what percent of variation in life expectancy is not explained for by health care expenditures?
A) 72
B) 28
C) 85
D) 15

2) What is the correlation between the health care expenditures of a country and life expectancy?
A) 0.28
B) 0.85
C) 0.15
D) 0.72

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Which of the following circles have their centers in the third quadrant? check all that apply.

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle. what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle. what is the measure of angle a? enter your answer in the box. m∠a= 3.)quadrilateral abcd is inscribed in this circle. what is the measure of angle b? enter your answer in the box. m∠b= °4.)quadrilateral abcd is inscribed in this circle. what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle. what is the measure of angle c? enter your answer in the box.°