Lou harris is guaranteed a minimum of $275 weekly salary plus 5 1/4% of hs total sales. what are his total sales for a week in which his gross pay was $700

The sales are $8095.24.

We can set up an equation for this.  Let x be the amount of sales.  5.25% = 5.25/100 = 0.0525.

275+0.0525x=700

Subtract 275 from both sides:
275+0.0525x-275 = 700-275
0.0525x=425

Divide both sides by 0.0525:
0.0525x/0.0525 = 425/0.0525
x = 8095.24