PLEASEEEEE HELP ME
2 answers:
Answer:
The correct option is C.
Step-by-step explanation:
The general form of linear regression equation is
.... (1)
where,
Using the graphing calculator, we get
Substitute the values of a and b in equation (1).
The equation of line of best fit is y=0.0142857+2.01071x, where x is number of years and y is height of trees.
Substitute x=22 to find the height of trees after 22 years.
The height of trees after 22 years is 44.25 ft. Therefore the correct option is C.
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9514 1404 393
Answer:
Step-by-step explanation:
The left section is defined at x = -5, but not at x = 0, so the interval for that definition is -5 ≤ x < 0. The function value on that interval is constant: 3.
The right section is defined a x = 5, but not at x = 0, so the interval for that definition is 0 < x ≤ 5. That section is a straight line with a slope of -1 and a y-intercept of 1. The function value on that interval can be written -x+1.
Then the piecewise definition is ...
f(x) = {3, for -5 ≤ x < 0; -x+1, for 0 < x ≤ 5}