Find the mass of the lamina that occupies the region d and has the given density function ? . d is the triangular region with vertices (0, 0), (2, 1), (0, 3); ? (x, y) = 3(x + y)

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid