Fred the clown can create 20 animal balloons every 15 minutes.

3

step-by-step explanation:

given

x² + 2x + c = 0 ← in standard form

with a = 1, b = 2 and c = c

if there are no real solutions then the discriminant

b² - 4ac < 0, that is

2² - (4 * 1 * c) < 0

4 - 4c < 0 (subtract 4 from both sides)

- 4c < - 4

divide both sides by - 4, reversing the sign as a consequence

c > 1

hence a possible value of c is 3