The cost of paper varies directly with the number of reams bought. suppose 2 reams cost $5.10. write a linear equation that could be used to find the cost of x reams of paper. find the cost of 15 reams of paper

let x be the number of reams of paper and $y be the cost.

y=kx

when x=2, y=5.10,

5.10=k(2)

2k=5.10

k=2.55

y=2.55x

cost of 15 reams of paoer= 2.55(15)= 38.25

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !