Determine the value of k such that x+3 is a factor of x^3+4x^2-2kx+3

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?