12 shoppers are above 20 years old
Answer:
28j + 21
step-by-step explanation:
(7) (2j+3+2j)
=(7*2j) + (7*3) + (7*2j)
=14j + 21 + 14j
=28j + 21
Answer:
See graph
Step-by-step explanation:
We want to graph the piece-wise function,

The two functions has a common point which is
.
Plot this point and one additional point on each line say;
and
.
Click the ray tool and click the common point first and then click the second point to draw the first line.
Repeat the same process to draw the second line.
This will give you the graph that is similar to the one in the attachment.
Answer:
0, -10, -20, -30, -40, -50, ..., -10(n-1)
Step-by-step explanation:
An arithmetic sequence with a common difference of -10 just indicates that each term adds negative ten to the prior one, which is just subtracting ten. If you slap a random value as the beginning, zero in my example, then you spam subtract negative tens, you get an arithmetic sequence. The variable "n" is just the term number - 0 was n=1, -10 was n=2, -20 was n=3, etc.