At McMeck High School they decided to calculate the average GPA of all 950 students. The average GPA was 2.38 with a standard deviation of 0.59, what is the margin of error? Round
your answer to three decimal places.

Ngrid mixes 3.6 pounds of almonds with some raisins to make a trail mix. she divides the trail mix into 12 equal portions. each portion weighs 0.7 pound. how many pounds of raisins did she use to make the trail mix? express the answer to the nearest tenth.

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

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