Round 6609707 rounded to the nearest ten thousand

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities

Select the term that describes the linear portion in this quadratic equation 7x^2-12x+16=0 a) -12x b) 7x^2 c) 16