Homework: Section 4.2
icore: 0 of 1 pt
3 of 6 (2 complete)
HW Score: 16.67%, 1 of
1.2.13
Question Help
A student at a junior college conducted a survey of 20 randomly selected full-time students to determine the relation between the number of hours of video game
playing each week, x, and grade point average, y. She found that a linear relation exists between the two variables. The least squares regression line that describes
this relation is ý = -0.0546x +2.9332
(a) Predict the grade-point average of a student who plays video games 8 hours per week.
The predicted grade-point average is:
(Round to the nearest hundredth as needed.)

2.50

Step-by-step explanation:

X = the number of hours per week

If the student plays 8 hours per week, replace the x in y = -0.0546x +2.9332 to find the answer.

-0.0546(8) = -0.4368

The add 2.9332

-0.4368 + 2.9332 = 2.4964

2.4964 rounded to the nearest hundredths place is 2.50 or 2.5

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

the factor is 2

step-by-step explanation:

let f(x)=8(3^(x−2)+2)

to stretch a graph by 3, it would be 3f(x)

g(x) =3f(x)

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

x     −2     0     2     4     6

f(x) 1/64 1/16   1/4     1     4

1/64 * z * z = 1/16

i multiplies by z twice because it its 2 steps from -2 to 0

1/64 z^2 = 1/16

multiply by 64 to clear the fraction on the left side

1/4 * 64 z^2 =1/16 *64

z^2 = 4

take the square root of each side

sqrt(z^2) = ±sqrt(4)

z = ±2  

we are multiplying by 2 each time.