Answer:
52
Step-by-step explanation:
5x-22+4x+4 = 90
9x-18=90
9x=108
x=12
4*12+4
52
Answer:
15
-----
32
Step-by-step explanation:
3 5 15
-- * -- == ---
4 8 32
Answer:
See below;
Step-by-step explanation:
21 . Consider an exponential function;

<em>Solution; Provided Directly Above</em>
Answer:18 runners
Step-by-step explanation:
7+11=18