An alloy is a metal made by combining two or more metallic elements. You mix an alloy that contains 14% copper with an alloy that contains 24% copper to make 100 pounds of an alloy that is 18% copper. How many pounds of the 14% alloy was used? A.6 pounds
B.16 pounds
C.40 pounds
D.60 pounds

answer: idk

step-by-step explanation:

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192/15 = 12.8.

12.8

step-by-step explanation:

192/15 is 12.8.

however, it says to round to the nearest foot, which would equal 13.

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.