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jeka94
3 years ago
13

The tax rate as a percent, r, charged on an item can be determined using the formula – 1 = r, where c is the final cost of the i

tem and p is the price of the item before tax. Louise rewrites the equation to solve for the final cost of the item: c = p(1 + ). What is the final cost of a $40 item after an 8% tax is applied?
Mathematics
2 answers:
Setler [38]3 years ago
8 0
P = 40
r = 8% = 8/100 = 0.08 (use the decimal form)

c = p*(1+r)
c = 40*(1+0.08)
c = 40*(1.08)
c = 43.20

The final cost (after tax) is 43.20
melisa1 [442]3 years ago
3 0

The <em><u>correct answer</u></em> is:

$43.20

Explanation:

The formula we have is

c = p(1+r), where c is the total cost, p is the price of the item before tax, and r is the tax rate written as a decimal.  This formula comes from the fact that adding a percent tax to the cost of an item takes 100% of the price and adds r% to it; this is why we multiply the price by (1+r).

Since our tax rate is 8%, r = 8% = 8/100 = 0.08.  The price of the item is $40.  Using this information, we have:

c = 40(1.08) = $43.20

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Number 2 is the problem i need help with
Reptile [31]

Answer:

2a) $180

2b) $1440

Step-by-step explanation:

2a) Basically Samuel works for 6 hours a day and earns 7.50 per hour, so you have to do 7.50 x 6 to see how much he earns per day (which in this case is $45). You then have to multiply $45 to 4 since he earns $45 per day and works 4 days per week (which is $180).

2b) After finding out how much he earns per week ($180 from the previous question), you then have to multiply $180 by 8 as $180 is the amount he earns per week and since he works for 8 weeks you have to multiply $180 by 8 (the answer is then $1440).

sorry if I'm not making sense, i tried :) good luck!

8 0
3 years ago
Read 2 more answers
Mary is buying several items that cost $128.25 total. She is using a store coupon for 35% off her purchases. She has to pay 4% s
scZoUnD [109]
If it is 35% off, then u r paying 65%...
0.65(128.25) = 83.36....this is without the tax

and there is a 4% sales tax....
83.36 * 1.04 = 86.69 <====
3 0
3 years ago
Read 2 more answers
1- Find the value of the two numbers if their sum is 12 and their difference is 4. You must use an algebraic expression to solve
PilotLPTM [1.2K]
12-4=8 which means 12-8=4 which means now you have the difference of 4 and 8+4=12 which means now you have the sum of 12
3 0
2 years ago
Solve for x: x2 = 16
Paha777 [63]

Answer:

8

Step-by-step explanation:

to get x alone you divide the 2 away on both sides, getting x = 8. To check multiply 8 by 2 and you get 16.

Hope this helps!

7 0
2 years ago
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What is the unit cost of $9 for $56.07
Dmitry [639]

Answer:

Hmm.. I'm stumped

Step-by-step explanation:

Just here to say you can do it without brainly, you're smart!

6 0
2 years ago
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