Which number line shows all the values of x that make the inequality -3x +1​

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

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