Question 19 What is the value of x after the following statement? float x; 3.0 4.0 (3 2)/ 5: 1. 5.75 2. 5.50 3. 1.75 4. 3.75 Question 20 What is the value of x after the following statements? float x: x = 0; x3.04.0 x 2.0: 1. 22.0 2. 12.0 3. 10.0 4. 14.0 Question 21 Given the following code fragment and the input value of 4.0, what output is generated? tloat tax: float total: cout s renter the cost of the itemin-i cin > total: if ( total 3.0) tax - 0.10 cout