For 11, we start by plugging 1 in, getting 2(1)^2+1-5=-2=y
Plugging 1+m instead, we get 2(1+m)^2+1+m-5=2(1+2m+m^2)+1+m-5
= 2+4m+2m^2+1+m-5= 2m^2+5m-2. We have to find the difference between that and -2, so 2m^2+5m-2 -(-2)=2m^2+5m
Differentiating 12, we use the Power Rule to get -6x^2+14, and plugging x=1 into it, we get -6(1)^2+14=-6+14=18
-3 because you could eliminate the 3x by subtracting it by 3x
Answer:
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216cm^2
Step-by-step explanation:
brainliest please
Answer:
100
Step-by-step explanation:
25% of 100=25
100+25=125
125-25=100
It goes up 25% then it gets discounted back down to its original price
