Becca brownie recipe call for 3 3/4cup of flour. if becca wanted to make a batch that is 3/5 the the amount how many cups will she need

Answer question above and explain each step : )

Which graph corresponds to the function f(x) = x2 + 4x – 1?

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)?