I have a very large polynomial that i have to graph and i'm having a hard time finding the minimums and maximums

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Could somebody me with this radical simplification?