Answer:
The input have to be -9 to get output 214 with the rule y=-15x+79
Step-by-step explanation:
x is the input, y is the output so:
214 = -15x + 79
214 - 79 = -15x
15x = -135
x = -9
Answer:
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Step-by-step explanation:kk
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You need this key result: in any polygon, the sum of the interior angles is

where
is the number of sides of the polygon.
Your polygon has seven sides, and the measures of all angles are given. So, we can write

Again, we've simply written that the sum of all interior angles is the number of sides, minus two, times 180.
We can simplify both sides: we sum like terms on the left hand side, and we easily compute the right hand side:

and we can solve this equation for
by dividing both sides by 30:

Finally, the required angles is 
Y = 6x - 4
basically, we just sub answer choices in to see which ones make the equation true.
answer is : (0,-4) , (1,2) , (3,14)
This is true. If you count the number of lbs, you get 16 and if you count the number of dollars in the same length, you get $4.