Which ordered pairs are solutions to the equation 2x+9y=11

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The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

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 +"