Answer:
A.
$1.40, $1.75, $2.10
B.
40
Step-by-step explanation:
A.
Follow the pattern of $0.35
B.
14 divided by 0.35 = 40
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Answer:

Step-by-step explanation:
Using the rule of exponents
⇔ 
Given
=
= 
Answer:
Step-by-step explanation:
Amount of water in tank 1 = amount of water in tank 2
30t +25 = -20t + 1000
Add 20t to both sides
30t + 20t + 25 = -20t + 20t + 1000
50t + 25 = 1000
Subtract 25 from both sides
50t + 25 - 25 = 1000 - 25
50t = 975
Divide both sides by 50
t = 975/50 = 39/2

t = 19 minutes 30 seconds
After 19 1/2 minutes both tanks will have 610 liters of water
- 3 + u = - 20
u = - 20 + 3
u = -17
hope this helps!.