A subcontractor submits a price for 1,250 square feet of waterproofing at $7.80 per square foot. What is the extended amount?
Correct Answer
C) $9,750.
The extended amount is quantity times unit price: 1,250 times $7.80 equals $9,750.
Why This Is the Correct Answer
The extended amount is quantity times unit price: 1,250 times $7.80 equals $9,750.
Why the Other Options Are Wrong
Option A: $97,500.
$97,500 misplaces the decimal point, giving ten times the correct amount. The correct calculation is 1,250 x 7.80 = 9,750.
Option B: $975.
$975 misplaces the decimal point, giving one tenth of the correct amount. The correct calculation is 1,250 x 7.80 = 9,750.
Option D: $1,250.
$1,250 never multiplies by 7.8. The correct calculation is 1,250 x 7.80 = 9,750.
Reference Hint
Study anchor (closed-book): memorize Project contracts from CSLB 2026 Law Book; CSLB Home Improvement Contracts / Business and Professions Code Section 7159; know the rule or calculation trigger without relying on exam-room lookup.
Independent practice; verify any reference hint against the edition and category permitted for your booking. Official exam and reference-list sources →
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