The factored expression is: 3(5n-6)
The GCF between 15 and 18 is 3. So you would divide both numbers by 3. That would leave you with 5 taking the place of 15 and 6 taking the place of 18. Then you would fill in the blanks. Three multiplied by the expression 5n-6 would give you your original expression of 15n-18.
Pablo has to paint

more murals.
Painted mural to jar of paint ratio:

Simplify the ratio.

Pablo needs 2/5 jars of paint per each 1/3 painted murals

8% I am sorry if I am wrong
First, you would add all the pounds he bought altogether, to know how much he bought, and how many pounds he will divide amongst his friends. That's 3.4 + 2.5 + 4 which equals to 9.9.
So he divides 9.9 pounds of cashews between himself and his two friends, and that makes it dividing 9.9 pounds between two people. That would simply make it : 9.9 ÷ 3, which equals to 3.3
Each friend will get 3.3 pounds of cashews.