Precalculus - multiple choice question

Answer : { x| x>1 }

The graph of the function is

The equation is in the form of

where (h,k) is the vertex

from the given function  

the vertex is (1,-4)

The graph is decreasing till x=1

then the graph starts increasing after x=1

So the x values for which the function is increasing is x>1

c.

step-by-step explanation:

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5