Find the greatest common factor of 18, 36,18,36,18, comma, 36, comma and 454545. plzz answer its due by 11.00

Find the greatest common factor of the polynomial: 10x^5+15x^4-25x^3 10x^5 x^3 5x^3 5

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?