Slope formula: 
Slope of line one: 
Slope of line two: 
Slope of line three: 
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Hello there,
Actual price = $100
After 10% discount = $100 - (10/100 x 100)
= $90
After 15% discount = $90 - (15/100 x 90)
= $76.50
Final cost - $76.50
Hope this helps :))
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I'd turn the fraction into a decimal. 56.25% but the answer in simplest form is <span>-5/7(2/5). i hope this helped you. :)</span>
(8 + √11)(8 - √11)
8^2 - √11^2
64 - √11^2
64 - 11
53
The answer is: 53.
You can solve this question using two different methods. One is obviously a hit and trial method in which you keep guessing a number which gives the same amount of total cost. Second is forming two different equations and then solving them using simultaneous methods learnt.
The correct answer is 75 miles. I used the hit and trial method. You can see 20 + 75 * 0.35 = 46.25 and similarly 35 + 75 * 0.15 = 46.25. Hence the same cost.
