Answer:

Step-by-step explanation:
We are given that Ben has a cell phone plan that provides 200 free minutes each month for a flat rate of $39.
We are also told that For any minutes over 200, Ben is charged $0.35 per minute.
let x be the minutes used each month
So, if 
So, coat will be $39
If 
So, Ben is charged $0.35 per minute
So, when 
So, charge = 
So, the piecewise functions accurately represents charges based on Ben's cell phone :

Answer:
DB = 13 cm
Step-by-step explanation:
ΔCAB ≅ ΔDBA by ASA, so CA ≅ DB by CPCTC.
CA = 13 cm, so DB = 13 cm.
Answer:
11 (2c + 3d)
Step-by-step explanation:
Find the GCF (Greatest Common Factor)
Answer: 11
And then use 11 to factor out 22c + 33d
Answer:
y=30
Step-by-step explanation:
(Corrected) Explanation:
(0.2 x 0.3)-(0.2 + 0.3)
0.06 - 0.50
-0.44
Therefore, 0.44 is your answer.