The price of a table went from $1,400 to $500

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Consider the graph of the exponential function y=3(2)×

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