Answer:
The weighted average is of 69.94.
Step-by-step explanation:
Weighted average:
The weighed average is found multiplying each grade by its respective weight.
The grades, and weights are:
67 on the lab, with a weight of 23% = 0.23
69 on the first major test, with a weight is 21.5% = 0.215
85 on the second major test, with a weight is 21.5% = 0.215.
63 on the final exam, with a weight of 34% = 0.34.
Weighted average:

The weighted average is of 69.94.
If 3 people are going to the store each day
the probablity is 100%
Answer:
3 5/8 + 3/5w = t
Step-by-step explanation:
The puppy is gaining each week so, 3/5w
you want to include the original weight so, +3 5/8
equals total weight, = t