How is the total price including sales tax calculated

The parking lot of a store has the shape shown. all angles are right angles. what is the area of the parking lot?

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

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?