Book Maths Puzzle Time Distance and Speed

An airplane left an airport at 1pm traveling at a rate of 242 mi/hr. After traveling some distance, one engine failed, and the airplane returned to the field at a reduced rate of 1

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Book Other Question

Two gasohol mixtures are available: one with 6.35% alcohol and the other with 11.28% alcohol. How many gallons of the 6.25% mixture must be added to 25 gallons of the other mixtur Find the vertex and intercepts for each quadratic function and sketch its graph.
1) y=x^2+4x
2)y=-3x^2+6x
Thank you very much!!