A 500-square-foot attic area receives insulation at $1.35 per square foot. What is the material cost?
Correct Answer
C) $675.
Five hundred square feet times $1.35 per square foot equals $675.
Why This Is the Correct Answer
Five hundred square feet times $1.35 per square foot equals $675.
Why the Other Options Are Wrong
Option A: $500.
$500. is below the supported result for insulation cost calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option B: $575.
$575. is below the supported result for insulation cost calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option D: $735.
$735. is above the supported result for insulation cost calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Insulation Cost cart for Checking Material: square first, feet second, whole units last.
Reference Hint
Study anchor (closed-book): memorize Insulation cost calculation from California Building Code, California Code of Regulations Title 24. / Title 24 California Building Code and Energy Code insulation quantity concepts; know the rule or calculation trigger without relying on exam-room lookup.
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