The cost C (in dollars) of building a house is related to the number k of carpenters used and the number e of electricians used by† C(k, e) = 15,000 + 50k2 + 60e2. If k = e = 19, compare the effects of increasing k by one unit and of increasing e by one unit.

look at the photo

find k when e = 15

Look at the other pic

inst rate of carpenters with 15 electricians: decreasing at 0.476 carpenters per electrician

Step-by-step explanation:

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d

im not sure what this means: mc011-7.jpg

step-by-step explanation: