Ordered pair 4x+5y=-13

Suppose that I have an unlimited supply of identical math books, history books, and physics books. All are the same size, and I have room on a shelf for 8 books.

Ou and two friends got jobs at stores in the mall. You earn $117.60$117.60 for 1414 hours of work. Ty earns $148.50$148.50 in 1818 hours. Kim earns $137.60$137.60 in 1616 hours. Who has the highest pay rate in dollars per hour?

Equivalent expression for 12a+6b

A machine assembles 44 key chains per hour. how many key chains does the machine assemble in 11 hours

Find the center and radius for the circle defined by the equation: x^2+y^2+5x-y+2+0 A) (-5/2, 1/2); √6 B) (5/2, 1/2); 3√2 / 2 C) (5/2, 1/2); √6 D) (-5/2, 1/2); 3√2 / 2

Carl has three lengths of cable, 5 _ 6 yard long, 1 _ 4 yard long, and 2 _ 3 yard long. He needs at least 1 yard of cable.

What is the answer to 3x+5/x-3

7. Manny charges $1.25 for a cup of Temonade at the lemonade stand. He sells 9 cups. How much money does Manny collect?

If the ratio of children to adults is 7:8 and there are 140 children at an amateur surfing competition, how many adults are in attendance?

7 birds are on a fence, half of them fly away, then 2 come back. How many birds are left on the fence?