Each day, valerie chargers her lunch account for her lunch. if the cost of lunch is $3, then by how much has her lunch account been impacted over a period of 15 days?

What is the value of x in the diagram below?

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²