Did you accidentally cut your question off?
Answer:
B.) 
Step-by-step explanation:
use the slope rule

Fill in values

Simplify

Simplify further

Done.
Answer:
a) False
b) False
Step-by-step explanation:
We are given the following information:
Z is a set of all integers,
is a set of all positive integers and
is a set of all negative integers.
Q is a set of all rational numbers,
is a set of all positive rational numbers and
is a set of all negative rational numbers.
N is a set of all natural numbers.
a) False
We will show this with the help of a counter example.

which is a rational number and not an integer.
b) False
We will show this with the help of a counter example.

which is a rational number and not a natural number.
Answer:
4 11/16 m²
Step-by-step explanation:
The formula for the area of a rectangle = Length × Width
From the question:
Length = 1 1/4 m
Width = 3 3/4m
Area of the rectangle =
1 1/4 m × 3 3/4 m
= 5/4 m × 15/4 m
= 75/16 m²
= 4 11/16 m²
Area of the rectangle = 4 11/16 m²