Answer:
9d+3
Step-by-step explanation:
(6d+5)-(2-3d)= cancel out parentheses
6d+5-2+3d= Commutative property of addition
6d+3d+5-2= Group like terms
(6d+3d)+(5-2)= Combine like terms
Answer = 9d+3
Answer: no it is not
Step-by-step: you can not have a negative exponent so the answer would be 3.1 x1/10^5
f(n)= f(n-1) · 0.6+48, n>0