18:24 = 3/4
4:70 = 2/35
35:105 = 1/3
22:7 = 22/7
12:165 = 4/55
Answer:

Step-by-step explanation:
"At least" is inclusive, so you can be 21 years old.
From what is there it is nearly impossible to find an exact number so I would say C... hope this helps
Answer:
1. a
2. 
Step-by-step explanation:
1. Since there is one value of y for every value of x in (−1,0),(−4,5),(3,2),(−3,5), this relation is a function.
2. To find the inverse, interchange the variables and solve for y.

Answer:
See below.
Step-by-step explanation:
Following order of operations:
177537+87439=264976
264976-19673=245303
So, 177537+87439-19673 is equal to 245303.
-hope it helps