Elmer borrowed $3150 from his brother Julio to pay for books and tuition. He agreed to repay Julio in 6 months with a simple annual interest at 4%. How much will the interest amount to? What must Elmer pay Julio at the end of 6 months?

no pictures of the graph

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step-by-step explanation:

the answer is d on edge

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,