Which number line represents the solution to 5 x < 30?

Which shows the correct substitution of the values a, b and c from the equation 1=-2x+3x^2+1

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.

Find cot x if sin x cot x csc x = √2