Does anybody know what 10+5^3-1 is?

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

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.