I need help on 12&14 please!! Even if you can only answer one

Answer:
Question 12
Luisa's annual contributions:
25% of $12,988
= 0.25 × $12,988
= $3,247
(a) Total annual contribution:
= Group Med + Dental + Vision
= $3,247 + $980 + $324
= $4,551
(b) Bi weekly deduction:
= $4,551 ÷ 365 × 14
= $174.56
OR
= $4,551 ÷ 52 × 2
= $175.04
**It depends how you calculate biweekly - if you divide the annual amount by 365 days then multiply by 14, OR if you divide the annual amount by 52 weeks then multiply by 2**
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Question 13
Boris' annual contributions:
HOM - 10% of $8,190:
= 0.1 × $8,190
= $819
Dental - 50% of $662:
= 0.5 × $662
= $331
Vision - 50% of $288:
= 0.5 × $288
= $144
Total annual contribution:
= HMO + Dental + Vision
= $819 + $331 + $144
= $1,294
Weekly deduction:
= $1,294 ÷ 365 × 7
= $24.82
OR
= $1,294 ÷ 52
= $24.88
**It depends how you calculate weekly - if you divide the annual amount by 365 days then multiply by 7, OR if you divide the annual amount by 52 weeks**
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Question 14
Annual contributions:
Total annual contribution:
= $12,640 + $866 + $444
= $13,950
Quarterly payments:
= $13,950 ÷ 4
= $3,487.50