John receives $150 for his birthday. he decided to spend $25 a day. write an equation to model the situation.

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?