Answer:
revenue variance = (standard quantity x standard price) - (actual quantity x actual price) = (7,100 x $4.10) - (7,100 x $3.8732) = $29,110 - $27,500 = $1,610 unfavorable (actual revenue was lower than budgeted revenue due to a decrease in sales price).
spending variances:
oyster bed maintenance variance = $3,360 - $3,500 = -$140 favorable
packing supplies variance = $1,945 - $1,775 = $170 unfavorable
wages and salaries variance = $6,205 - $5,795 = $410 unfavorable
shipping costs variance = $3,635 - $3,905 = -$270 favorable
utilities cost variance = $1,080 - $1,270 = -$190 favorable
other expenses variance = $1,141 - $521 = $620 unfavorable
total spending variance = $17,366 - $16,766 = $600 unfavorable (actual expenses were higher than budgeted)