Can someone please help me, this is for summer school and I need fast replies, I have 29 other question like these, please help.​

Which expressions are equivalent to -6 + 3m

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?

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form