Amir wants to buy a new mp3 player that cost $76.50 if you save $8.50 each week how many weeks will it take a meyer save enough money to buy the mp3

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0