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

<span>11,760,825 in word form is eleven million, seven hundred and sixty thousand, eight hundred and twenty-five.</span>
Answer:

Step-by-step explanation:
1.Turn the 9 into a fraction

2.factor the bigger numbers.

3.Cancel out the common factor(3)

4.multiply across

F(x) is written in mx + b form for linear equation. so we have m =2 and b = -1
m represents the slope so the slope is 2