Only need question c please, thanks

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

On average a herd of elephants travels 10 miles in 12 hours you can use that information to answer different questions drag each expression to show which is answers

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1