Which pair of factors of 30 has a sum of -17?

What is the solution to the system of the equations? x = y - 3 x + 3y = 13

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

If 25% of y is 30, what is 60% of y?