bruno is 3x years old and his son is x years old now. their combined age was 40 years a decade ago. write an algebraic equation that will determine Bruno's age now, and explain why you chose this equation

Pleting the square f the given find the x-intercepts of the parabola with vertex (-5,13) and y-intercept (0, 12). write your answer in this form: (14,.99). if necessary, round to the nearest hundredth. *- h enter the correct answer, de verter, and ametry 00000 done doo