Answer:
A. 
Step-by-step explanation:
The explicit formula for a arithmetic sequence is a_n = a_1 + (n - 1)d.
We want to find a_21.
a_21 = 17 + (21 - 1)(10)
a_21 = 17 + (20)(10)
a_21 = 17 + 200
a_21 = 217
The 21st term is 217.
7 14/15 Good luck! have a great day
First, put the data set from least to greatest.
10, 18, 6, 11, 12 → 6, 10, 11, 12, 18
________
Find the median with finding what the middle value of the data set is.
6, 10, 11, 12, 18
Median is 11.
________
Find the mean with adding all the numbers and dividing it by how many numbers their are.
6 + 10 + 11 + 12 + 18 = 57
57 / 5 = 11.4
Mean is 11.4
________
Best Regards,
Wolfyy :)
The function 
is a line. As such, its domain and range is the whole real number set 
, and it has no horizontal nor vertical asymptotes.
Moreover, there's no constant term, so it's x and y intercept is the origin (0,0).
