Empirical estimates show that for men a) the income effect is greater than the substitution effect b) the income and substitution effects are both large so that wage changes have no effect on hours c) the substitution effect is greater than the income effect d) the income and substitution effects are both small so that wage changes have no effect on hours

Zeta corporation is a manufacturer of sports caps, which require soft fabric. the standards for each cap allow 2.00 yards of soft fabric, at a cost of $2.00 per yard. during the month of january, the company purchased 25,000 yards of soft fabric at $2.10 per yard, to produce 12,000 caps. what is zeta corporation's materials price variance for the month of january?