The pattern given here does not work! What is the pattern for 1,-2,2,-4,0,...

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?

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

During a wright loss challenge your friend goes from 125 pounds to 100 pounds. what was the percent weight loss