Answer:
2
Step-by-step explanation: 0 = 2x - 4
2x = 4
x = 2
Answer:17/2pi
Explained:
Just writing longer so I don’t have to go into details. If this is on khan academy you don’t have to show your work!
if PLAN A is cheaper than PLAN B then,
P (A) < P (B)
30+0.01t < 20+0.05t (subtract 0.05t from both sides)
29.95-0.04t < 19.95 (subtract 29.95 from both sides)
-0.04t < -10 (divide both sides by -0.04)
t > 250
So plan A is cheaper than plan B when you send more than 250 texts.
Hope it helps.