HELP PLEASE Determine the maximum number of zeros of the polynamial function -8x^4 -x^2+2 please select the best answer choice provided

It’s 1 or 2 or 4 or 3

Ineed i do not understand i'm only 8

Could somebody me with this radical simplification?

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.