Anisa has saved $650. she wants to buy a birthday gift for her father which costs $690. how many tens must be added to 650 to make 690? ​

Find the missing dimension of the rectangular bar x+1=3x^3+7x^2+8x+2

The growth rate colony of bateria t hours after the start of an epidemic is given by f(r)=-t^4+12t^3-58t^2+132t. how many hours after the outbreak will the bateria be totally eliminated?

Subsitution of 2x-3y=15 x=2y+5answer and show the solution​