Hey there!
-x^2 - 2x + 7
To find the vertex, you will rewrite in the vertex form.
f(x) = -(x+1)^2+8
(-1,8)
Hope this helps!
Plz help I need it now plz answer directly without files or links
1 answer:
You might be interested in
Answer:
She needs a grade of 71 on her next text.
Step-by-step explanation:
Mean of a data-set:
The mean of a data-set is the sum of all values in the data-set divided by the number of values.
Tammy has scored 82, 78, and 93 on her previous three tests.
Thus, her grades are 82, 78, 93 and x, in which x is her grade in the fourth test.
There are 4 tests.
What score does she need on her next test so that her average (mean) is 81?
We have to find x when the mean is 81. So
She needs a grade of 71 on her next text.