Ew, math. Could someone please help me with this? It's timed.
I'll mark brainliest!

Find the given elements if matrix d:

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 owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer