#sol1
a1=1×4-1=3
a2=2×4-1=7
a3=3×4-1=11
a4=4×4-1=15
a5=5×5-1=19
#sol2
f(1)=1×4-1=3,
f(n+1)=f(n)+4,
so .... you know.
Answer:
Get Wolfram Aplha
Step-by-step explanation:
wolframalpha.com
Answer:
Step-by-step explanation:
x + 159 = 180
x = 21
Answer:
the answer is B and C
Step-by-step explanation:
9x4=36
6x6=36
