Answer: Number 3 is either f=-11/9 or f=11/9. Number 4 is either 9.5 or -9.5
Step-by-step explanation: The |x| represents absolute value, which is how far the number is away from zero. Because of this, -9 and 9 have the same absolute value of 9. To solve question three, find what times 9=11. the answer is 11/9. the answer if 11/9 can be either 11/9 or -11/9, due to the properties of absolute value. You use this same process on question 4