We know that According to Algebra of Real Functions :
If f and g are two real functions which are defined under the same domain then (f - g)(x) = f(x) - g(x)
Given f(x) = x² - 3x - 9 and g(x) = x - 7
⇒ (f - g)(x) = f(x) - g(x)
⇒ (f - g)(x) = x² - 3x - 9 - (x - 7)
⇒ (f - g)(x) = x² - 3x - 9 - x + 7
⇒ (f - g)(x) = x² - 4x - 2
Use a squared + b squared = c squared
60x60=3600
30x30=900
3600+900=3660
Square root 3660
=60.49
Rounded is 60 inches
The length of the rectangle is 8 feet. X = 5
Percentage error
Here error = 16 - 15.4 = 0.6
Therefore, percentage error
=3.9%
If each bracelet is $7 then you just need to multiply $7 by the number of bracelets you want to buy. So its 7x5 = $35
Answer $35
