Need some help pleasEEE The blueprint for the Moreno's living room has a scale of 2 in. = 7 ft. The family wants to use a scale of 1 in. = 5ft. What is the width of the living room on the new blueprint?

Please help, I'm serious-

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)?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?