A coffee merchant combines coffee that costs $7 per pound with coffee that costs $3.60 per pound. How many pounds of each should be used to make 26 lb of a blend costing $6.15 per pound?

I have the question factor this problem, 2x^2+5x-3. And I was told to multiply 2 by -3, which the answer is -6. And then add the factors of -6 to get the middle number. Which -1 plus 6 is 5 for...

Paul traveld a total distance of 8 km in 54 minutes by running and walking. He then ran 10 km to the power of negative 1 , he then walked the remaining distant at 5 km to the power...

Alice has x tapes and Bill has 10 more tapes than Alice. Alice gives Bill 15 more of her tapes. Bill now has twice as many tapes as Alice now has. Write an algebraic equation to show this data and...

By air, the distance from Melbourne, Australia, to Cairo, Egypt, is 2338 miles more than the distance from Madrid, Spain, to Bangkok, Thailand. If the total of these distances is 15,012 miles,...