17+x=20, subtract 17 from both sides, x=3
I don’t know about this question
Answer:In general, if the pyramid has 'x' sides, then it will have 'x' lateral faces. Total Number of Faces = Number of Base Faces + Number of Lateral Faces. Total Number of Faces = 2 + x. So the formula is F=x%2B2 where "x" is the number of sides that the pyramid has and "F" is the total number of faces.
Step-by-step explanation:
Answer:
y = 2x + 1
Step-by-step explanation:
y (the sandwich) is TWICE the price of soup (2x) plus one (+1)
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