Simplify the square root of 400+the square root of 100+the square root of 900

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

The table represents a linear function. what is the slope of the function? –6 –4 4 6

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