Jim started with b baseball cards and gave 13 away. So, that means we take away from his starting amount or b.
So, b - 13 is the expression you are looking for.
20 ,six times 70 equals 420 and five times eighty equals 400
All that is needed to do is to simplify the expression.
The answer to your question is:
- 
+ 
Hope I helped!
Answer:
Prob = 95.0%
Explanation:
There are 382 people in total
69 respond and are in the 18-21 age bracket
12 refuse to respond and are in the 18-21 age bracket
282 respond and are in the 22-29 age bracket
19 refuse to respond and are in the 22-29 age bracket
Then, the number of people that are in the 18-21 age bracket or agreed to respond is
69 + 12 + 282 = 363
Therefore, the probability of getting someone in the 18-21 age bracket or someone who agreed to respond is
P = 363/382
P = 0.9502
P = 95.0 %
