I believe you multiply 1 by 6 because there is an invisible 1 infront of that a then you divide 3.14 to the 2 power And you might get your answer
Use the percent proportion
21 x
—— = ——
100 300
to solve :
21 x 300 = 6300
6300 ÷ 100 = 63
Answer = 63 of Elmer’s shells are fossilized snail shells :)
A. f(x) = 7 + 0.3x
Just re-read your question! Hope I helped!