Carmelo`s employer matches 15% of Carmelo`s contributions to his 401(k) plan. If Carmelo`s employer contributed $300 to the plan last year, how much did Carmelo contribute to the plan last year?

A technical writer makes $45,000 per year and has just begun contributing 8% of her salary to her 401(k) plan. If her employer matches 6% of her contributions, how much will have been contributed to the 401(k) plan after 2 years? A. $7632 B. $7200 C. $3600 D. $3816