Trapezoid
it has four sides and 1 set of parallel lines
Answer:
The function would be linear because the rate of change is constant.
Step-by-step explanation:
Given

per minute
See attachment for complete question and options
First, we write the function that calculates the cost (C(t)) for t minutes.
This is calculated as:



Rewrite as:

A function that has the above format is referred to as a linear function which has the general format

Where
m represents the slope/rate and it is constant
From the list of given options, (a) is correct.
Step-by-step explanation:
well, the first solution that comes to my mind is :
8/4 + 5/1 = 7/1
2 + 5 = 7
the reason : the only numerator I can "cut" into integer pieces is 8.
5 and 7 are prime numbers.
so, it tried to keep 5 and 7 whole, and then add a part of 8 to make this equation true. and that worked right away.
Answer:
Step-by-step explanation: 1/4 is 0.25 so 0.25 X 18 = 4.5 so then 18X 5.15 = 81