Answer: B
Work:
-5x+10>-15 = x<3/10
Answer: h=7
Step-by-step explanation:
By definition the function in vertex form is:

Where (h,k) is the vertex of the parabola.
You must group the terms that contain the same variable in the function:

Complete the square as following:

Now you must rewrite it as following:

Then:
h=7
Answer:
(a)3-2=1 (b) 4-3=1 (c) 12-1-1=10
The answer is 0.7 Have a nice day