3x+2y+6-7x+y+10x-6x-3y-6

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

Rationalize the denominator- 12x/√x-10

Determine domain and range, largest open interval, and intervals which function is continuous.