Asystem of equations is shown below:
equation a: 3c = d − 8
equation b: c = 4d + 8
which of the following steps should be performed to eliminate variable d first?
multiply equation a by −4.
multiply equation b by 3.
multiply equation a by 3.
multiply equation b by 4.

The answer is A. Multiply equation A by −4.

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step-by-step explanation:

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98