Use the matrix calculator to solve this linear system for cost per hour of each machine. 100x1 + 130x2 + 16x3 = 3,528 120x1 + 180x2 + 28x3 = 4,864 160x1 + 190x2 + 10x3 = 4,920 x1 = x2 = x3 =

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answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

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