Lou harris is guaranteed a minimum $275 weekly salary plus 5.25% of his total sales. what were his total sales for a week in which his gross pay was $700?

Well, his gross, namely, his total he got before any taxes and other deductions, was 700

now, he's guaranteed a salary of 275, so he gets that as a fixed amount per week
then it gets padded up with commission from the sales, namely 5.25% of total sales

so  hmm 5.25% of anything is just (5.25/100) * anything

so... let's say, the total sales were "x", 5.25% of "x" is just (5.25/100) * x
or  0.0525x

whatever "x" was, we know that, 5.25% of that, and his 275 salary, add up to 700

thus 700 = 275 + 0.0525x   < solve for "x"

That. you would have multiple