The range to this question in set notation is (-infinity, positive infinity).
S=<span>πr + πre
s=r(</span>π+πe)
r=2/π(e+1)
Answer:

Step-by-step explanation:
-Let x be the number of boxes of wings bought
- y the number of trays of nachos bought.
-Given that each wing box costs $7
-Each tray cost $4 and that the total cost used is less than $40
#The total amount used for the purchase expressed as;

Answer:
Choice 3
Step-by-step explanation:
There is a total number of 11 numbers that are less than 12.