College algebra
posted by quel .
Curt can be paid in one of two ways for the sales he generates:
Plan A: 900$ per month plus 10% sales commission.
Plan B: $1200 per month plus 15% commission on sales above $8,000.
Assuming he always exceeds $8,000 in sales, for what amount interval of $ sales is Plan B better?

900 + .1 x = 1200 + .15(x  8,000)
is breakeven point. Above that take the 15% 
So I distribute the .15 and then solve for x?

yes

why did you put .1% instead of .10%?

They are both the same.

10% = 10/100 = .10 = .1
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