74% of a university's freshman class are majoring in Economics. If 6290 students in the freshman class are Economics majors, how many students are in the freshman class?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

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

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.