Answer:
studying
Step-by-step explanation:
to prepare for a math test you have to study and study then have some one one to help you with it
Answer:
x=7
Step-by-step explanation:
(12x+1))+(5x-3)=117
conbine like terms
17x-2=117
+2 +2
17x=119
/17 /17
x=7
Answer:
162
Step-by-step explanation:
20 divided by 2
10
---
28 - 10
18
3^2 is 9
so, 9 x 18 = 162.
Let's break it down again, just for extra clarification.
20÷2 = 10
28 - 10 is 18.
3^2 is 9.
9 x 18 = 162
The answer is 162.
In both cases you may well benefit from graphing the functions.
Do you recognize f(x) = (x + 1)^2 - 1 as a quadratic function, whose graph is that of a parabola that opens up? By comparing this to y = a(x-h)^2 + k, we see that a=1, h= -1 and k = -1. The vertex is at (h,k), which here is the point (-1, -1). This is the minimum value of the function. Thus, the range of this function is [-1, infinity).
Now for the function f(x) = 7x - 11: This is a linear function whose graph is (surprise!) a straight line. When x increases, y increases, without limits to either. Similarly, when x decreases, y decreases.
Thus the range includes all real numbers: (-infinity, infinity).
