A wholesale paper company sells a 100-pound package of computer paper that consists of three grades, glossy, semi-gloss, and matte, for printing photographs. Glossy costs $5.80 per pound, semi-gloss costs $4.25 per pound, and matte costs $3.75 per pound. One half of the 100-pound package consists of the two less expensive grades. The cost of the 100-pound package is $487. Set up and solve a system of equations, using matrices, to find the number of pounds of each grade of paper in a 100-pound package. (glossy, semi-gloss, matte)

29.5977692753

step-by-step explanation:

ranks (& how to earn them):

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you must wait until 2 people answer to award brainliest. i'm pretty sure that it should be next to the "" and "comments" buttons.