Raquel bought a total of 18 roses and orchids. Roses were $2.50 each while orchids were $4.00 each. If she spent $54.00, how many of each did she purchase?

Ammonia molecules have three hydrogen atoms and one nitrogen atom. how many of each atom arein five molecules of ammonia

Which of the following is an equation of a line parallel to the equation y=4x+1?

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =