Greg is saving up for a new cell phone that will cost him $550. He already has $300 saved. If he would like to buy the phone in four weeks, how much must he save each week if he plans to have at least $550? What is the inequality and solution?​

Geometry. i need step by step explanation on how to do each problem.

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

Three times the sum of a number and seven is negative thirty-six. what is the number?