Only a few more questionsss​

For the equations below which statement is true ? -2x=14 6x=-42

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

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)?