When solving the system x + 2y = 9 and x - y = 6 by substitution, what can be substituted for x in the second equation?
1/2y + 9
09-7/2
09 - 2y
09-7

The height of a triangle is 4 in. greater than twice its base. the area of the triangle is no more than 168 in.^2. which inequalitycan be used to find the possible lengths, x, of the base of the triangle?

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?