Given f (x) =2x-3 what is f(-15)
A. -16
B. -13
C. 7
D. 30
1 answer:
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Answer:
Step-by-step explanation:
Given
per square yard
Required
Determine the cost of carpet and installation
First, calculate the area of the carpet
Convert to square yard
The cost is then calculated as:
<h3><u>
Answer and Explanation</u>
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- The most important difference between an experiment and an observational study is the fact that; .<u>In an observational study the researcher has no control over the variables while an experiment involves application of treatments to a group and recording the effects.</u>
- In an observational study researchers observe subjects and measure variables of interest without assigning treatments to the subjects. The treatment that each subject receives is determined beyond the control of the investigator.
- In an experiment investigators apply treatments to experimental units (people, animals, plots of land, etc.) and then proceed to observe the effect of the treatments on the experimental units
Both equations are equal to y, so set them equal to each other forming an equation in x
2x+4=x-3
-x -x
1x+4= -3
-4 -4
x= -7
You just plug in the value of x which is -7
Y= -7-3
Y= -10
Bottom one in the picture
<span>10.5=5z
re-order
5z = 10.5
divided both sides by 5
5z/5 = 10.5/5
Simplify
z = 2.1
Answer is </span>C. z= 2.1
