10. a study by the u. s. office of science and technology in 1972 estimated the cost in 1972 dollars) to
reduce automobile emissions by certain percentages, and the graph gives the linear model of this table.

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

hope that , fam!

-une, your fren : )

i think the answer is c sorry if it's wrong

sometimes it can be so they can fit in with a certain group, and others are just like that because of their personality.