Answer:
With brackets
(t + 9) + (t + 9) + (t + 9) + (t + 9)
4(t + 9)
Without brackets
4t + 36
Step-by-step explanation:
7÷4
54
the answer I 544
The highest peak is in the middle and both sides of it are fairly similar, so this would be a bell shaped distribution.
b