I would write 7/8 as a rate per 100 by first scaling 7/8 down to 3.5/4 and then multiplying it by 25. Then, I would get 87.5, my answer
Answer:
110 test
Step-by-step explanation:
Let
x ----> the number of packet of 10 test
y ----> the total cost
we know that
The number of packet of 10 test purchase multiplied by $11 plus the enrollment fee of $30 must be equal to $151
so
The linear equation that represent this scenario is

we have

substitute

Solve for x
subtract 30 both sides


Divide by 11 both sides

The number of packets purchase was 11
To find out the number of test, multiply the number of packets by 10

Answer:
Im in 7th grade and I need some help on a math problem. can I post it?
Answer:
<em>Hello, I think the answer is -0.84 Hope That Helps!</em>
Answer:Test one is 84% correct
Test two has a total of 20 questions
Test three he has 28 answers right
Step-by-step explanation: