Which graph represents y = |x2| − 3x − 4?

Consider the graph of the exponential function y=3(2)×

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

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.