Answer:
a= -4/15
Step-by-step explanation:
Step one: 4+5a=8+20a
Step two: 5a-20a=8-4
Step three: -15a=4 then divide both sides by 15 to get your answer :)
Answer:
the slope is 0
Step-by-step explanation:
Answer:
250; 
Step-by-step explanation:
a. 15 minutes passed, so there would be 250 people who came in
b. You would create a formula, where t = time after 8:15 (in minutes), while p = people who are at the parade
, which equals 
Answer:
80+50P
Step-by-step explanation:
80 is fixed
50 is variable
1 device = 130
2 decices = 180