Depth(m) temp(C

1 answer:

8 0

A.) For 25 ≤ d ≤ 150;
ΔT/Δd = (5.50 - 5.50)/(150 - 25) = 0/125 = 0

b.) For 25 ≤ d ≤ 75;
ΔT/Δd = (5.10 - 5.50)/(75 - 25) = -0.4/50 = -0.008

c.) For 100 ≤ d ≤ 200;
ΔT/Δd = (6.00 - 5.10)/(200 - 100) = 0.9/100 = 0.009

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The question doesn't show any graph, but I have included it to help you with the problem.

Answer:

The new graph will be shifted up by 3 units

Step-by-step explanation:

Graph of a Real Function

The total cost of belonging to the book club depends on one fixed cost, the initial joining fee, and a variable cost, depending on the number of books purchased. Call C the total cost and x the number of purchased books, then

$C=18+10.25x$

By giving x some values, we get the corresponding values of C and then we can plot the graph as a blue line, in the image provided below.

If the joining fee goes up by $3, the new function is

$C'=18+10.25x+3$

$C'=21+10.25x$

The graph is also shown in the image, but with a red line. We can see the graph is shifted up by 3 units in the y-axis, but the slope remains the same, as the cost per book hasn't changed