Jonathan has been on a diet since january 2013. so far, he has been losing weight at a steady rate. based on monthly weigh-ins, his weight, w, can be modeled by the function w=-3m+205 where m is the number of months after january 2013
a) how much did jonathan weigh at the start of the diet?
b) how much weight has jonathan been losing each month?
c) how many month did it take jonathan to lose 45 pounds?
show work plz

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.