11 you count by 3 with the pizzas and 2 with the side dishes
35.39, 35.38, 35.37, 35.36 are some numbers that round to 35.4 when rounded to the nearest tenth
If I am reading this right, the final total after adding the 55% markup rate should be $159.65.
If Mallory makes $42.50 per hour and she works 20 hours a week, we multiple those two and we get:
42.5 * 20 = 850
So she earns $850 per week.
Mallory saves half of that amount she would have $425 per week.
In 4 weeks she would have:
425 * 4 = 1700
Mallory will save $1,700 in four weeks.