Emma works at a clothing store, and works on commission.
The amount she makes each week depends on how much clothing she sells, and she also receives a weekly amount regardless of her sales.
Emma also has to pay for her meals during her shifts, which detracts from her income.
Emma’s income can be modelled by the following equation:
I=100+12J+5T+7S+5H-8M
where I is her income, J is the number of jeans she sells, T is the number of T-shirts she sells, S is the number of shorts she sells, H is the number of hats she sells, and M is the number of meals she buys.
If Emma makes $205 in a week and sells: 6 pairs of jeans, 4 shorts, and 5 hats, and buys 5 of her meals.
How many T-shirts did she sell?
