F(x) = -4x +1 and g(x) =13, for what value of x does f(x) equal g(x)?

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)?

When you answer this can you explain

How can (square root of 25) ^2 be rewritten?