86° 34° Х X = _ degrees help quick pls

This is a table of values that follows a given rule or function. each output comes from the input being applied to the rule.

The parabola opens: y=√x-4 (principal square root) up down right left

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution