Which of the following in the best estimate for 78x62?

(1)4200
(2)4800
(3)4900
(4)5600

I’m stuck on this equation, anyone got the answer?

The first side of a triangle measures 5 in less than the second side, the third side is 3 in more than the first side, and the perimeter is 17 in. how long is the third side? if s represents the length of the second side, which of the following represents the length of the third side? s-5 ws-2 s+ 3 next question ask for turn it in

Percent increase and decrease. original number: 45 new number: 18