Answer:
Option B) minimum value at −10
Step-by-step explanation:
we have
This function represent a vertical parabola open upward (because the leading coefficient is positive)
The vertex represent a minimum
Group terms that contain the same variable, and move the constant to the opposite side of the equation
Divide the coefficient of term x by 2
10/2=5
squared the term and add to the right side of equation
Remember to balance the equation by adding the same constants to the other side
rewrite as perfect squares
----> function in vertex form
The vertex of the quadratic function is the point (5,-10)
therefore
The minimum value of the function is -10
Check the picture below.
make sure your calculator is in Degree mode.
Answer:
The expression 16.78d + 49 represents the amount Rita spent at the mall.
If she bought 3 itens, Rita spent $99.34.
Step-by-step explanation:
Expression:
First store: 16.78d + 23
Second store: 26
Total: 16.78d + 23 + 26 = 16.78d + 49
Then estimate how much Rita spent if she bought 3 items.
Now, we have that d = 3. So
16.78*3 + 49 = 99.34
If she bought 3 itens, Rita spent $99.34.
You multiply all the sides to find the value of x
There are 12 inches in 1 foot, so I would assume that one inch would be 12 times shorter than one foot.