Last week, Chen bought 8 1/2 gallons of gas at $2.30 per gallon. This week, he bought 4 3/10 gallons of gas at $2.70 per gallon

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.