The answer would be the first option (x+1)(x+8). You would use the foil method, which will give you the equivalent value of the expression.
Hope this helped
Answer:
20:25
Step-by-step explanation:
add how many parts (4+5=9)
45/9=5
4*5=20, 5*5=25
therefore, 20:25
3 different ways since there are 3 switches
