First we define variables.We have then:D: monthly data.C: total cost.
For Plan A:
C = 5D +30
D: [5, 8]
We evaluate for D = 8
C = 5 (8) +30
C = 40 + 30
C = 70 $
For Plan B:
C = 2D +50
D: [5, 8]
We evaluate for D = 8
C = 2 (8) +50
C = 16 + 50
C = 66 $
Answer:
the best choice for him is plan B:
C = 2D +50
Answer:
x>±4
x<±1
Step-by-step explanation:
Given the inequalities
x² > 16
Square root both sides
√x² > ±√16
x > ±4
The solution is x>±4
2) x² < 1
Square root both sides
√x² <±√1
x < ±1
Hence the solution is x<±1
I believe you have to factor 2a^3b^4 out of 16a^3b^7+2a^6b^4-22a^4b^5.
2a^3b^4(8b^3+a^3-11ab)