Solve the equation. check your solution. 12. 4b=117. 8

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?

Solve the inequality and graph 6j - 7 < 5

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.