Domain of y=∛-3x+5 i don't seem really to grasp the concept of prime roots. it said on symbolab that the domain is (-∞,∞), but how?

Since you can take the cube root of any number (even a negative), no number is not included in the domain. The domain is all really numbers. the whole negative infinity to infinity is saying that in a different way. It says, the domain goes from negative infinity to infinity, so theres is no number that would not work.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.