Answer:
Gross pay for each day is 5h + 8 dollars.
Step-by-step explanation:
Given:
Number of days = 7
Gross pay for 7 day = 35h+56 dollars.
We need to find the gross pay for each day
Also given Harriet earns the same amount of money each day.
Hence
For 7 days = 35h + 56 dollars
for 1 day = gross pay for each day.
By using Unitary method we get;
Gross pay for each day =
Hence gross pay for each day is 5h + 8.
Answer:

Step-by-step explanation:
The line passes through points 
Let 
Equation of a line passing through points
is given by 

So,

Put 

-8 + 4 = 2u
-4/2 = 2u/2
-2 = u