Jack montgomery participated in his company medical insurance plan the plan has an annual cost 3,975 the company pays 70 percent if montgomery is paid biweekly what is his insurance cost per paycheck

Annual  cost of insurance plan is $3975. The company pays 70 percent. How much does Jack pay?

100% - 70% = 30%

How many is that in dollars?
30% out of 3975 = 30% * 3975
We need to write percentage in decimal form

Jack pays $1192.5 annualy for this insurance plan

Assuming that year has 52 weeks, price per week would be:
$1192.5 / 52 = $22.93

He is paid biweekly so he needs to pay twice this amount:
$22.93 * 2 = $45.86

His insurance cost per paycheck is $45.86.