Is any of my friends on brainy?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee