Marie worked for three months last year. if monthly payments was 1.240.00, 1.620.00, and 1.460.00; what was her average pay per month

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

The distributive property allows you to say that 3(x − 1) = 3x −

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)