(LINEAR EQUATIONS). 5 subtracted from 3x is 16. Find the xPLEASE!!!

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?