The sum of the interior angles of any quadrilateral is 360°.
So,
90° + 90° + 52° + x = 360°
=> 232° + x = 360°
=> x = 360° - 232°
=> x = 128°
14000 ÷ 100 = 140
140 x 20 = 2800 = price of vat
14000 - 2800 = 11200 = total cost of van
11200 ÷ 100 = 112
112 x 4 = 448 = deposit
11200 - 448 = 10752
10752 ÷ 24 = 448
£448 per month
The critical values for x are -2 and -6.
We break the function domain into regions:
-∞ to -6 f(x) ≥ 0
-6 to-2 f(x) < 0 this is the correct statement, answer 2
-2 to +∞ f(x) ≥ 0
