Georges asked five of his friends how long they studied for the last math test and what grade they received. he found a linear regression equation for the data to be y = 9.6x + 65.8. what does the 9.6 mean in the context of this equation?

slope 9.6 represents change in grade over time taken to study for the last math test

Step-by-step explanation:

Georges asked five of his friends how long they studied for the last math test and what grade they received. He found a linear regression equation for the data to be y = 9.6x + 65.8.

y= 9.6 x + 65.8

from the equation y = mx+b, m is the slope and b is the y intercept

From the given equation

slope = 9.6  and y intercept = 65.8

slope 9.6 represents change in grade over time taken to study for the last math test

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total