Easy 10 points! identify the property used in this equation: (–2) + 6 + 1 = 1 + 6 + (–2) communtative property distributive property identity property! only respond if you absolutly know the answer!

Which equation is equivalent to the given expression? -(1/2y+1/4) a. -1/4(1+2y) b. 1/4(2y-1) c. -2(1/4y-1/8) d. 2(1/8-1/4y)

The salesperson earns a 5% commission on the first $5,000 she has in sales. the salesperson earns a 7.5% commission on the amount of her sales that are greater than $5,000. this month the sales person had $8,000 in sales. what amount of commission, in dollars, did she earn?

Can someone tell me if these are correct?