How would I solve a problem like this, what's the answer ? ( with an explanation ) 3yd 2ft 9in + 8in

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

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

Which function has an inverse function? a.f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²