What is it math science just English
In y=mx +b?
If so then -3=-2(3)+b
B=3
Answer: first option
Step-by-step explanation:
The volume of a regular pyramid can be calculated with the following fromula:

Where B is the area of the base of the pyramid and h iis the height of the pyramid.
The base is a square, therefore, its area B is:

You know that the height is 3, therefore, you can substitute these values into the formula.
THerefore, the volume of the pyramid is:


Answer:
28
Step-by-step explanation:
4x + 9x + 8x = 147
21x = 147
x = 147/21
x = 7
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The shortest side will be 4x
4*7 = 28