Answer:
10.5 is the answer
Step-by-step explanation:
4(5y−8−2)=185−15
(4)(5y)+(4)(−8)+(4)(−2)=185+−15(Distribute)
20y+−32+−8=185+−15
(20y)+(−32+−8)=(185+−15)(Combine Like Terms)
20y+−40=170
20y−40=170
20y−40+40=170+40
20y=210
20y/20=210/20
y=21/2
y=10.5
Four 1+1+1+1=4 1+1=2 2+2=4!!!!!!
A is 12.71
B is 36.93
If this is wrong I’m sorry, I really tried
We are given
first term is 1
so, 
each succeeding term is found by adding 3 to the one before it
so, common difference is

Since, this is arithematic sequence
so, we can use nth terms formula

now, we can plug values
and we get


................Answer
What are you confused by?