The ratio of the cost of one metre of polyester fabric to the cost of one metre of cotton fabric is 2: 7

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2