The value of f(5) is 
Step-by-step explanation:
The function is 
To find
substitute
in 

Multiplying the terms, we get,

Adding the terms, we get,

Thus, the value of
is 
7 times 8 is 56
9 times 10 is 90
7^5 is your answer
Hope this helps
Answer:
The area is equal to 666km²
Step-by-step explanation:
Multiply 18 by 37 to get 666.