Answer:
Step-by-step explanation:
Let
x-----> the number
we know that

so

solve for x
-----> expression that represent the number
Solve the equation using substitution?
Answer:
$30
Step-by-step explanation:
Divide the cost ($75) by the yards (2 1/2) to get $30 per yard.
Answer:
8 minutes
Step-by-step explanation:
Since the level of the tank needs to be at two-thirds its original level, then this means that Andrew needs to drain only one-third of the fish tank. Therefore the amount of time it would take can easily be solved with this 2-step equation...
6t = 144 *
.... first multiply the right side of the equation
6t = 48 ... next divide both sides by 6
t = 8
Finally, we can see that it will take Andrew 8 minutes to drain the tank to two-thirds of its original level.
Answer:
option 3
Step-by-step explanation:
you add one, so the arrow goes one space to 1
since youre sutracting -2, the arrow goes ack two spaces to -1