Zoe's fish tank holds 27 liters of water. she uses a 3 liter container to fill the tank. how many times does she have to fill

What is the standard form of -5x^2+2x^4-11+x^3+3x

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?