A pattern of dots grows exponentially. The table shows the number of dots at each step of the pattern. step number 0 1 2 3
number of dots 1 5 25 125
Write an equation to represent the relationship between the step number, n, and the number of dots, y.
At one step, there are 9,765,625 dots in the pattern. At what step number will that happen? Explain how you know.

If 20% of a number is 35, what is 50% of that number?

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)