Plz plz plz help fast it’s graded

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?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

What is the solution set of the quadratic inequality x^2-5< or equal to 0