Answer:
10 months
Step-by-step explanation:
Because he was at $-1,000 and he deposited $100 a month that he earns from watching the dogs so it took him 10 months to realize that his bank account is now at $0
Th correct answer would be D
Answer: 49 students
Step-by-step explanation:
2 /7 of students in a school wore shorts today. The number of students to be selected in order to get 14 students who will wear shorts to school will be:
Let the number of students that will be sampled be y. This will be:
2/7 of y = 14
2/7 × y = 14
2y/7 = 14
Cross Multiply
2y = 7 × 14
2y = 98
y = 98/2
y = 49
49 students will be selected randomly.
Answer: 1537.
Step-by-step explanation:
Formula for sample size :-

Given :
Margin of error : E= 100
Critical value of 95% confidence : 
Now, the required sample size will be :-

Hence, the minimum sample size required = 1537.