Denise bought 116 ounces of beans for a bean dip. she bought both 15-ounce cans and 28-ounce cans, and the total number of cans she bought was 6. which of these systems of equations can be used to determine the number of 15-ounce cans and the number of 28-ounce cans that she bought? assume x represents the number of 15-ounce cans and y represents the number of 28-ounce cans.

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: