Domain: Anything at all. All numbers and sub-divisions of a number line. - ∞ < x < ∞
The range is much harder. You could complete the square to get the range, which I will do after we get the answer. The simplest way to get the smallest part of the range is to graph the quadratic. The lowest point is at (-2, -25) so the range is
Range: -25 ≤ y < ∞
Completing the square.
y = x^2 + 4x - 21
y = (x^2 + 4x) - 21
y = (x^2 + 4x + (4/2)^2 ) - 21 - (4/2)^2
y = (x^2 + 4x + 4) - 21 - 4
y = (x + 2)^2 - 25
The minimum point is (- 2,-25) just as the graph predicted.
Answer:
it is d i believe . hope this helps :)
Answer: It’s C
Step-by-step explanation: 5-12-2=-9 and then the 11 stays
Answer:
If Kim did not spend any money, she has $147.78 now.
Step-by-step explanation:
If Kim did not spend any money, the money she has now would be equal to the amount she had at the beginning of the month plus the three payments she received minus the amount she paid her sisters, which is:
(66.78+(3*33.50))-(2*9.75)=(66.78+100.5)-19.5=167.28-19.5=147.78
According to this, the answer is that if Kim did not spend any money, she has $147.78 now.