F(x)= 1/x Squared -3
Substitute 3 for x
Solve

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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.

Need plz been trying to do it for a long time and still haven’t succeeded