A chemistry student was asked to make 100 L of 48% alcohol solution by mixing a 40% alcohol solution and a 60% alcohol solution. If x is the required amount (L) of the 40% solution and y is required amount (L) of the 60% solution, which of the following linear systems would best model this situation?

A) x + y = 100

40x + 60y = 48

B) x + y = 0.48

0.4 x + 0.6 y = 100

C) x+ y = 100

0.4 x + 0.6 y = 0.48

D) x + y = 100

0.4x + 0.6y = 0.48(100)

E) x + y = 100

0.4x + 0.6y = 0.48

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step-by-step explanation:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: