12 ÷2/3 whats the answer to this?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?

Which fraction represents the ratio 35 : 42 in simplest form