Answer:
3x-12
Step-by-step explanation:
3(x-4)
Distribute
3x -3*4
3x-12
Answer:
-5
Step-by-step explanation:
add them together (-4)+(-1) make a t chart it'll help you out
<h3><u>Question</u></h3>
The amount of money that Charlie saves each week is directly proportional to the amount he earns. Last week Charlie saved $32 on his earnings of $512. At the same rate, how much will Charlie save this week on his earnings of $448?
<h3><u>Answer:</u></h3>
Charlie saved $ 28
<h3><u>Solution:</u></h3>
Given that amount of money that Charlie saves each week is directly proportional to the amount he earns
Let y represent of saved money and x represent amount of earned money
Therefore,


y = kx --- eqn 1
Where "k" is the constant of proportionality
<em><u>Last week Charlie saved $32 on his earnings of $512</u></em>
y = 32 and x = 512
Substituting in eqn 1, we get

To find amount of saved money, we will substitute k = 0.0625 and x = 448 in eqn 1
y = 0.0625(448) = 28
Thus charlie saved $ 28
When you round to the nearest hundredth, you round to two numbers after the decimal place
So the answer is 80.16
The 5 becomes a 6 because the number after it (9) is larger than 5
Hope this helps
-4z+1 = bz+c
Take all z's to one side
1 = bz+c+4z
Then take c to the other side
1-c = bz+4z
Factor out z on the right side
1-c = z(b+4)
Then divide (b+4) from both sides
z = 1-c/b+4 or (1-c)/(b+4)