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Question

Kevin and Joshua collect shells on the beach. The given equations model the number of shells, k, that Kevin has and the number of shells, j, that Joshua has. (HINT: Use x and y instead of k and j in Desmos) *

1 point

Answer 1

k + j = 54

j = k - 30

Plug the expression for j from the second equation into the first equation and solve for k.

k + (k - 30) = 54

2k = 84

k = 42

Now plug the result for k into the second equation and solve for j.

j = 42 - 30 = 12