Answer:
The average rate of change between -1 and 2 is 1.
Step-by-step explanation:
To get this, use the two ordered pairs (-1, 5) and (2, 8). Now use the slope formula to find the rate of change.
m(slope) = (y2 - y1)/(x2 - x1)
m = (8 - 5)/(2 - -1)
m = 3/3
m = 1
Expand = 2⋅2⋅x+2⋅3−(2⋅x−2⋅2)
Simplify = 10+2⋅x
The activity described is an Observational Study. The explanatory variable was the design of the surrounding merchandise.
<h3>Research and Realism</h3>
The exercise is an observational study because the researcher does not interfere with the subjects.
B) The study does not suffer from a lack of realism. The people were recruited randomly and were not told what to observe, rather, they were questioned later on what they had observed.
Realism in research refers to the concept that what occurs in the mind are tangible. These tangible occurrences may modify behavior and the factors that trigger such behaviors can be observed and identified by the use of qualitative means.
See the link below for more about Observational Studies:
Observational Studies:brainly.com/question/1051685
See the link below for more about Realism:
brainly.com/question/26483670
Answer:
$7.76
Step-by-step explanation:
Let x be the amount he was making before the raise.
He had an increase of 3.1% of x added to x which resulted in a new salary of $8.00 per hour.
Mathematically:
x = $7.76
He was making $7.76 before the raise.
