This is very simple, you can use tally marks to find the amount of birthdays. Then divide it by 100. Good luck !
Step-by-step explanation:
Q1. E
Q2. A
Q3. H
sorry if I'm wrong anyways
Q4. C
(x -1)(x +4) = 0
x² +3x -4 = 0 . . . . . . probably the form you're looking for
Step-by-step explanation:
the answer is the keyboard keys getting stuck, it's something you can touch and feel, thus it's an hardware problem
