Suppose a pound of peanuts is priced at X, M&M is Y, and the equation is 6X+4Y=42.70 8X+5Y=55.27. [8X+5Y=55.27]*4-[6X+4Y=42.70]*5 is [32X+20Y=221.08] - [30X+20Y=213.5] X=3.79 Y=4.99
f(x)= -99.4x + 198.8
f(1) = -99.4*1 + 198.8 = 99.4
f(2) = -99.4*2 + 198.8 = 0
f(3) = -99.4*3 + 198.8 = -99.4
<span>f(4) = -99.4*4 + 198.8 = -198.8
</span>
Answer:
Mean= 
=13.28 ≈13
For median arrange in ascending or descending order. i am arranging in ascending order
9,11,11,13,15,17,17
cancel from left and right until one number is left
median=13
6 to 10 10-6 = 4 that is the range
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