Alex had y toy cars. he gave 11 of them to his friend. later his dad bought him twice as many toy cars as he had in the beginning. how many toy cars did alex have in the beginning of this story if now he has 55 of them?

What’s the domain of this function? fastttt

How do i do this activity, is appreciated

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)?