Consider two atoms: one with 3 protons and one with 4 protons. Which statement is true considering the identities of the elements?
1. One must know the numbers of neutrons to know if they are different elements.
2. The atoms are of the same element.
3.The atoms must be of different elements.
4. One must know the numbers of electrons to know if they are different elements.

Which graph represents an even function?

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.