Justify each step.
15. 2x – 5 = –20
2x = -15
x=_15

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min