Pleas hel

If f(x)=x+10, find out f(f(x))

(a) solve h+2/6 = h-3/4(b) solve the following simultaneous equations. 2x = y + 66x - 2y = 13x = ? y = ?

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?