Can anyone please help me out, I have more math questions in my profile.

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

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