If f ( x ) = 7 ( x − 1 ) + 8 f(x)=7(x−1)+8 , what is the value of f ( 1 ) f(1) ?

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Can someone me out here number 4 plz

Give me the equations of two lines that have the same slope but are not parallel.