2. mrs. long just got a new puppy! the puppy is learning how to run on hard wood floors. the puppy is running at a rate if 4 feet per second straight toward a wall that is 20 feet away. select all that apply to this situation.

the slope is -4 ft per second since the puppy is running at a rate of 4 ft per second.

the y-intercept is 20 ft because the puppy is 20 feet away from the wall.

the slope is 4 ft per second since this is how fast the puppy is running.

the y-intercept is 4 ft since the puppy is running at a rate of 4 feet per second.

the puppy will run into the wall after 5 seconds

5. a system of linear equations is graphed.

which ordered pair is the best estimate for the solution to the system?

(2, −6.5)

(−1.5, 0)

(0, −6.5)

(2.5, −6.5)

7. asanji and pranav each improved their yards by planting rose bushes and ivy. they bought their supplies from the store. asanji spent $42 on 3 bushes and 3 pots of ivy. pranav spent $48 on 3 rose bushes and 3 pots of ivy. what is the cost of one rose bush and the cost of one pot of ivy?

rose bush: $7 ; ivy: $4

rose bush: $5 ; ivy: $7

rose bush: $3 ; ivy: $5

rose bush: $6 ; ivy: $10

Part 1)

The slope is ft per second since this is how fast the puppy is running

The puppy will run into the wall after seconds

Part 2)

Part 3)

Step-by-step explanation:

Part 1)

Let

x------> the time in seconds

y-----> the distance in feet

we know that

The linear equation that represent the distance that the puppy runs is equal to

the slope is equal to

For

so

For -------> the puppy will run into the wall

therefore

The statements that are true are the following

The slope is ft per second since this is how fast the puppy is running

The puppy will run into the wall after seconds

Part 2)

we know that

The solution of the system of equations is the intersection point both graphs

In this problem

The x-coordinate of the intersection point is equal to

The y-coordinate of the intersection point belong to the interval---->

therefore

the best estimate for the solution to the system is the point

Part 3)

Let

x-------> the cost of one rose bush

y------> the cost of one pot ivy

z------> the cost of one bush

we know that      

------> equation A    

------> equation B    

There is not enough information to solve the system of equations

so

Verify the values of each case in the equation B

case A)

------> is not true

case B)

------> is not true

case C)

------> is not true

case D)

------> is  true

therefore

The case D is the solution

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb