What is the greatest monomial factor of 15*^3y^2+45x^2y^2+30x^2y^3?

15y^2

Step-by-step explanation:

Look for the biggest number that goes into each of the three terms in the expression. Then look for each variable and its highest power that is in each of the three terms. Put it all together and that is the "greatest" (biggest) "monomial" (number and variables with no plus or minus) "factor" it goes into the each term of the given expression. See image.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.