Answer:
x=1.6 repeating. I hope this helped
Range: 6.25
Interquartile range: 3:25
Would you like me to explain?
Answer:
See explanation below
Step-by-step explanation:
a. f(x) is increasing at (-∞, 1] and [7, ∞) because f'(x) is positive at those intervals.
b. f(x) is concave up at [4, ∞) because the slope of f'(x) or f''(x) is positive.
The area of Victoria's poster is twice the area of Krystal's poster.
<h3>How compare the areas of two similar posters</h3>
The two areas are shown in the image attached below. Each poster represents a rectangle and the ratio between the two areas (
), no unit, is defined by the following formula:
(1)
Where:
- Width of Victoria's poster, in feet.
- Height of Victoria's poster, in feet.
- Width of Krystal's poster, in feet.
- Height of Krystal's poster, in feet.
If we know that 
, 
, 
and 
, then the ratio between the two areas is:
The area of Victoria's poster is twice the area of Krystal's poster. 
To learn more on ratios, we kindly invite to check this verified question: brainly.com/question/1504221
So basically -3 x 16. Yeilds -48
