Afunction is defined by the equation y=8x-3. if the domain is 2< _x< _4, what is the range of this function

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20