Find the sum of the polynomials -4x^2+9x-3 and 7x^2-5x+4​

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?