Find the percent of each number. 64% of 75 tiles. 20% of 70 plants. 32% of 25 pages. 85% of 40 e-mails. 72% of 350 friends. 5% of 220 files.

Clearly, wether we're talking about tiles, plants, pages, e-mails, friend or files, the math won't change! :)

Percentages are just special fractions, since they have denominator 100. So, for example, 64% of 75 is given by

So, you divide the number by 100 and then you multiply by the percentage you want. As a last example, 20% of 70 is

And so on with all the others

it would open into a square depending on the type of envelope i’m not sure about the second part

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: