Answer: C or 2 seconds.
Step-by-step explanation:
To find the vertex in a standard form equation: (-b/2a,f(-b/2a))
plug it in: -64/2*-32 = 2
D, one number is positive and the other is negative. The only way it could equal 0 is to cross the other out. An example is, -5+5=0
Answer:
8
Step-by-step explanation:
Polynomial with real coefficients always has even number of complex roots. We know that one of them is 2 + 5i so the second one will be 2 - 5i and:

Answer B.
Answer:
6.9 miles.
Step-by-step explanation:
2.3mph x 3h=6.9m