Does anyone know what is the measure for these need help on this

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

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

Will mark brainlist what is the slope of the line passing through the points (-2, -8) and (-3,-9)? -7/5-5/71-1