Question

if x repsents the number of envelopes that lacey stuffed which equation best represents this situation

Answer 1

x: number of envelopes that Lacey stuffed

Sarah stuffed 10 more envelopes than Lacey, then Sarah stuffed x + 10 envelopes

Mark stuffed 3 less than twice as many envelopes as Lacey, then Mark stuffed 2x - 3 envelopes

Then, they stuffed x + x + 10 + 2x - 3 envelopes, which must to be equal to 503.So the equation is:

x + x + 10 + 2x - 3 = 503