Asixth-grade student bought three cans of tennis balls for $4 each. sales tax for all three cans was $.95. write an expression to show the total amount the student paid.

Aportion of a hiking trail slopes downward at about an 84° angle. to the nearest tenth of a flot, what is the value of x, the distance the hiker traveled along the path, if he has traveled a horizontal distance of 120 feet? a. 143.3 b. 12.5 c. 120.7 d. 130.2

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?