Answer:
$51, 200
Step-by-step explanation:
First is to find the increase of tuition
$3,200 × .8 = $2560
then subtract the year.
2020-2000=20
lastly multiply the year and the increase of tuition to know the final answer
$2560 × 20 = $51,200
Option D I believe because it is the only one that passes the vertical line test (the test that for every X value, there is only 1 Y value).
Let the age of the wise man be x years. And in the question it is said that , 400 reduced by 3 times my age is 133, that is,
400-3x =133
Now we need to solve for x, and for that first we subtract 133 to both sides
400-133-3x=0
267-3x = 0
3x=267
Next is to get rid of 3 by dividing both sides by 3, that is
x = 89 years
And that's his age .
Answer:
b. Time spent studying
Step-by-step explanation:
From the answer, choices provided it can be said that the confounding variable in James' study would be the Time spent studying because it is directly affecting the other variables in the study. The more time spent studying means the less time that the individual has spent using a cell phone, while at the same time drastically increasing the likelihood of getting better grades. Therefore, directly changing the values of both of these variables.
