My question is in the picture​

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5

New york is the 27th largest state in the united states.what percent of the 50 states in the us are larger than new york