Discover Questions

The function f is f(x)= (x+4)(x-a), the graph of f is a parabola , a is const. The x coord. is b/w 1 and 3, which is a?
A. -2
B. 1
C. 5
D. 9? How and why did we evolve to have quick wit and humor? What is the molecular structure of the stable form of FNO2? (N is the central atom.)? What does it mean that "everything is a code"? Do humans have 46 chromosomes or 48 chromosomes?