Answer:
$687.42
Step-by-step explanation:
The total with tax is ...
(price) + (tax rate)×(price)
= price(1 +tax rate)
= $643.95×1.0675 ≈ $687.42 . . . price with tax
9514 1404 393
x = 12.75
∠C = 51.75°
The two marked angles are complementary, so ...
(5x -12) +(3x) = 90
8x = 102
x = 102/8
__
C = (5x -12)° = (5(12.75) -12)°
<em>Check</em>
E = 3x = 38.25, then C+E = 51.75 +38.25 = 90 . . . . as it should
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