Answer:
please find attached pdf
Step-by-step explanation:
The argument is valid by the law of detachment.
It is given that ∠1 is a right angle that is ∠1 = 90°.
∠8 - ∠1 = ∠ 7 = 62° - 90° = - 28°.
$337.05
450 x (1- 0.3)= $315
$315 x (1+0.07)= $337.05