Answer:
n = 2
Step-by-step explanation:
4-2 = 2n
4 x 2 = 8
2 x 2 = 4
8 - 4 = 4
R=.2,P=.25, G=.55
359
6x3+18
18 to the second power is 324
10x3=30
30+5=35
324+35=359