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?

i think c. but don't trust it.

step-by-step explanation:

a and c

step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true

the answer is -1 for this question

step-by-step explanation: