For number 1. it is wrong. It is fresh water. Ocean water is salt water. I don't know the rest, sorry. I will come back if I find out though! :D
Answer:
-14a^2+6a-7
Step-by-step explanation:
Well first off x times x is squaring whatever the number is while x plus x is just multiplying by 2
X = log (base b) y
The base of the log becomes the base of the exponent.
The x and y switch.
b^x = y
