Answer:

Step-by-step explanation:
We are given the following information in the question:
A rectangular box has a length of x feet, a width of y feet, and a height of z feet.
Area of base =

Cost of building base = $4.20 per square foot
Total cost of building base =

Area of 4 walls =

Cost of building base = $0.75 per square foot
Total cost of building 4 walls =

Total cost of building box =

Answer:
B) y = 12x + 45
Step-by-step explanation:
45 is the amount of money he has to open it and deposits 12 dollars each month. x is the number of times he deposits. y is the total amount of money he has.
I. xy + 2y=3 Not linear equation because is grade 2 equation (xy).
II. x-2y = y Are linear equations in two unknowns (x and y).
III. 3x + 2y = 5 Are linear equations in two unknowns (x and y).
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Corect ansver: C) II and III only</h2><h2>
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Volume=lengh*breadth*height
=6*1*1=6 cubic feet
THERFORE THE CORRECT OPTION IS B