Answer: 4x + 100
Step-by-step explanation:
The company charges $4 per foot plus an installation charge of $100.
There is therefore both a fixed element and a variable element.
The fixed element is the $100 installation charge
The variable element is 4 * the number of square feet of carpet which is x: 4 * x
Formula puts them together to give:
= Variable cost + Fixed cost
= 4 * x + 100
= 4x + 100
What is the shape the question asks
well 3x15= 45 and 15x17= 255 so 45+255= 300
Answer:
35
Step-by-step explanation:
Given
n (A) = 15
n (B) = 20
Students who do not like any subject = 5
Hence, number of students who would like either both or either of the two subjects = 60-5 = 55
n (A or B) = n (A) + n (B) - n (A and B)
Number of students linking both the subjects
55 - 15-20
= 55-35 = 20
Number of students linking only one subject = 60-20-5 = 35