Answer:
n+18=7(n-3)
Step-by-step explanation:
Lets replace "A number" with the variable n because we do not know its value!
1) Rewrite the problem as an equation
n+18=7(n-3)
<u>If we want to solve the equation, do the following:</u>
1) Distribute 7 to n and -3:
n+18=7n-21
2) Add 21 to both sides:
n+39=7n
3) Subtract n from both sides:
39=6n
4) Divide both sides by 6:
n=6.5
Answer:
Just took the test, the answer is 14.7%
Step-by-step explanation:
Answer:
The slope is -5/4 or -1.25
Step-by-step explanation:
m= (y2-y1)/(x2-x1)
m= (-4-6)/(9-1)
m=(-10)/8
m= -5/4
Answer:
y= 550-12x
Step-by-step explanation:
Given data
Content of tank= 550 gallons
Rate of drain= 12gallon per minute
let the time it will take to drain all 550 gallons be x minutes
Hence the expression for amount of water in the tank after x minutes will be
y= 550-12x
<u>Statements</u>
<u>case A)</u> Sara had baked more cookies at the start of the 
hours than Liz
The statement is True
we know that
At the start of the hours Liz has baked 
cookies-----> see the graph
Find the number of cookies that Sara has baked for 
hours
therefore
Sara had baked more cookies at the start of the hours than Liz
<u>case B) </u>Sara bakes 
cookies each hour
The statement is True
we know that
The number of cookies baked each hour is equal to the slope of the linear equation
The linear equation is
The slope is 
<u>case C)</u> Liz bakes 
cookies each hour
The statement is false
Find the slope of the Liz graph
The slope is equal to
Let
Substitute the values
<u>case D)</u> Liz bakes more cookies each hour than Sara
The statement is False
Sara bakes cookies each hour
Liz bakes 
cookies each hour
