Answer:
Dana crossed the finish line before Mari.
Step-by-step explanation:

Dana<Mari<Clair<Jason<Alex
1/3 would be the correct answer I believe
Answer:
5800
Step-by-step explanation:
Let's say that the amount of cases last week is x.
When it says 23% more than x, it means 123% of x.
With this, we can make an equation.
.
To solve:
1. Multiply both sides by 100
123x = 7134*100
123x = 713400
2. Divide both sides by 123
x= 713200/123
x= 5800
Step-by-step explanation:
2(a + 2ab) + 4 - ab
= 2a + 4ab + 4 - ab
= 3ab + 2a + 4.
When a = 4 and b = -2,
we have 3ab + 2a + 4
= 3(4)(-2) + 2(4) + 4 = -24 + 8 + 4 = -12.
There would be 81 in grade 5
and 68 in grade 6
because 10% of 90 is 9 so 90 - 9 =81
and 15% of 80 is 12 so 80 - 12 = 68