Problem using the words "how much more":
I planted 35 different fruit bearing trees in my farm land. Mr Alex decided that as he has larger amount of Agricultural plot than me, so he decided to plant 75 different trees in his farm land. How much more trees Mr. Alex has planted than me in his farm land?
Solution: Number of trees in my farm land = 35 trees
Number of trees in Mr. Alex Agricultural land = 75 trees
Number of more trees that Mr. Alex has than me= 75 - 35= 40 trees
Draw two agricultural plot by drawing two rectangles. In one rectangle draw 35 small rectangles and in another draw 75 rectangles. In both cases color 35 rectangles. Number of non colored rectangles gives you the result that number of more tree that Mr. Alex has in his agricultural plot than me.
Answer:
The last expression is correct
Step-by-step explanation:
We have been given the following expression for simplification;
The bases of the two expressions are the same. They are both equal to 4. When multiplying numbers with the same base, we simply add their exponents. In this case our exponents are;
4 and -9
adding them we have;
4 + (-9) = -5
The simplified expression thus becomes;