Subtract 3 from the right and do the same to the left which leaves you to x = -1
Solve the equation by replacing x with -7 and then -1.
Then subtract the two to find the difference and divide that by the difference between -7 and -1.
f(-7) = -7^2 + 2(-7) -8 = 49 -14 -8 = 27
f(-1) = -1^2 + 2(-1) -8 = 1 -2 - 8 = -9
Difference between 27 and -9 = -36
Difference between -1 and -7 = -6
Rate of change = -36 /-6 = 6
The second child is about 19lbsif you want to round it otherwise it's 18 something lbs, so the first child is about... 57.
<span>Its going to be the part that has a 90 degree angle so half of the square in the corner.
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6/x = x-1
Multiply x by both sides
6= x(x-1)
Set x and x-1 equal to 6
x = 6, x = 1+6 = 7
