Answer:
−2y+24
Step-by-step explanation:
Let's simplify step-by-step.
7y−4(9/4y−6)
Distribute:
=7y+(−4)(9/4y)+(−4)(−6)
=7y+−9y+24
Combine Like Terms:
=7y+−9y+24
=(7y+−9y)+(24)
=−2y+24
STEP 1:
find the sales tax (decimal form)
x= sales tax
Cost + (Cost * Sales Tax)= Total
plug in known numbers
$9.40 + ($9.40 * x)= $9.87
9.40 + 9.40x= 9.87
subtract 9.40 from both sides
9.40x= 0.47
divide both sides by 9.40
x= 0.47/9.40
x= 0.05 sales tax decimal form
STEP 2:
find sales tax percentage
= 0.05 * 100
or move decimal to the right two decimal places
= 5% sales tax percent form
ANSWER: The sales tax is 5% (or 0.05 in decimal form)
Hope this helps! :)
Answer:
1. 60000.12
2. 54000.15
3. 9600.48
4. 3840.48
Step-by-step explanation:
I really hope this helps and may I receive brainliest please
Using linear functions, it is found that:
- Plan A is cheaper for less than 150 messages.
- Plan B is cheaper for more than 150 messages.
<h3>What is a linear function?</h3>
A linear function is modeled by the following rule:
y = mx + b
In which:
- m is the slope, which is the rate of change, that is, the change in y divided by the change in x.
- b is the y-intercept, which is the the value of y when the function crosses the x-axis, that is, when x = 0.
For each plan, we have that:
- The slope is the cost per message.
- The intercept is the fixed monthly cost.
Hence the cost functions for sending x messages are given as follows:
The costs will be the same when:
A(x) = B(x)
Hence:
0.1x = 12 + 0.02x
0.08x = 12
x = 12/0.08
x = 150.
Due to the lower intercept of plan A, and the lower cost per message of plan B, we have that:
- Plan A is cheaper for less than 150 messages.
- Plan B is cheaper for more than 150 messages.
More can be learned about linear functions at brainly.com/question/24808124
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Answer:300
Step-by-step explanation: