All categories

1 year ago

The graph of the function f(x) = (x − 3)(x + 1) is shown.

1 answer:

3 0

The expression that describes all of the values for which the graph is positive and decreasing is all real values of x where x < -1

<h3>Which describes all of the values for which the graph is positive and decreasing?</h3>

The equation of the function is given as:

f(x) = (x - 3)(x + 1)

When the value of the graph is positive, we have:

f(x) > 0

So, the function becomes

(x - 3)(x + 1) > 0

Split the above inequality

x - 3 > 0 and x + 1 > 0

Solve for x in the inequalities

x > 3 and x > -1

Hence, the expression that describes all of the values for which the graph is positive and decreasing is all real values of x where x < -1

You might be interested in

It costs a baker 2x + 30 dollars to bake x muffins a day. Each muffin is sold for 5 dollars. How many muffins would the baker ne

Svetradugi [14.3K]

Answer:

X = 10

Step-by-step explanation:

The equation to use would be; 2x + 30 = 5x; because the baker is looking for enough to cover the costs, no more no less.

Then all you have to do is solve for the equation.

2x + 30 = 5x

Subtract 2x from each side

30 = 3x

Divide by 3

10 = x

The baker needs to sell 10 muffins in a day to make enough to cover the revenue.

8 0

3 years ago

Read 2 more answers

What is the perimeter of a rectangle length 86ft width 9ft 10inches?

kondor19780726 [428]

The perimeter is 166.9 ft.

Convert feet to inches to make it easier to calculate. The formula to find the perimeter is... 2(w+h)

once you get your answer, convert inches back to feet.

3 0

2 years ago

Which expression is equivalent to (x^-4y/x^-9y^5)^-2

Nutka1998 [239]

Answer: simlify theexpression

y 12 x 10

7 0

2 years ago

Which is the best description for this histogram?

pshichka [43]

Answer: it is a

Step-by-step explanation: i got it right

7 0

3 years ago

Read 2 more answers

The population in the trapezoid-shaped region shown is about 3000 people. How many people are there per square mile?

Anastasy [175]

Answer: $\frac{3,000}{A}$

Step-by-step explanation:

<h3> Since the figure is not attached, below you can see a general explanation of the procedure to solve the exercise: </h3>

For this exercise you can apply the following formula, which is used to calculate the area of a trapezoid:

$A=\frac{h(B+b) }{2}$

Where "B" and "b" are the bases of the trapezoid and "h" is the height.

So, substituting values into the formula and evaluating, you can find the area of trapezoid-shaped region.

Since the population in the trapezoid-shaped region is about 3,000 people, you can find the number of people per square mile dividing the population by the area of the region.

Then, the following expression represents the number of people per square mile in that region:

$\frac{3,000}{A}$

7 0

3 years ago

Read 2 more answers