DUE TODAY by 2 WORTH ANYTHING
PLZ DO 8 AND 9

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

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!