Which equation represents the relation that is shown in the graph? Cost of Buying Comic Books
On a coordinate plane, a graph titled Cost of Buying Comic Books has number of issues on the x-axis and total cost on the y-axis. A line goes through points (0, 0), (1, 3.5), (2, 7).

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation:

3. 8,935,200 minutes

4. 227,040 feet