Lindsay has 9 blue envelopes. she has 7 fewer yellow envelopes than blue envelopes. she has 4 times as many green envelopes as yellow envelopes. how many envelopes does lindsay have in all?

What is the square root of 45? (step by step working plz)

Consider the following equation -167 + 37 = 49 - 21p select the equation that has the same solution as the given equation. o a. p - 5 + ip = 7 - p ob. +55 + 12p = 5p + 16 c. 2 + 1.25p = -3.75p + 10 d. -14 + 6p = -9 - 6p reset next

Me. i can't figure out this question. give an explanation too. .