Answer:
-4x-13
Step-by-step explanation:
To figure out the sum, you have to add like terms.
This is how it would look like:

Answer:
you need to provide the statement
Step-by-step explanation:
Exponential growth occurs when the growth rate of the value of a mathematical function is proportional to the function's current value.
Exponential decay occurs in the same way when the growth rate is negative.
Answer: 4m + 3
Step-by-step explanation:
4m references the 4 bags of marbles and the m marbles in each bag. + 3 references the extra 3 marbles.