The vertex of the function y= 32x-4x^2

Chose the graph below that represents the following system of inequality’s

One integer is 8 times another. if the product is 72, then find the integers

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.