Answer:
Part a) 
Part b) 
Step-by-step explanation:
we know that
A reciprocal of a rational number 
is obtained by changing the numerator and denominator, so the numerator becomes the denominator and the denominator becomes the numerator obtaining 
Part a) we have
200
we know that
the given number can be expressed as 
so
changing the numerator and denominator
The reciprocal is equal to
Part b) we have
450
we know that
the given number can be expressed as 
so
changing the numerator and denominator
The reciprocal is equal to
Remember PEMDAS.
P=parenthesis
E=exponents
M=multiplication
D=division
A=addition
S=subtraction
All of the surfaces are rectangular
It depends on what level of classes you take, but algebra classes in college do tend to be harder than algebra classes in high school or middle school.
