You are a school photographer taking individual and class pictures for 2 classes of 21 students each. On
average, each individual picture takes 3 minutes and a class picture takes 10 minutes. About how long
should it take you to get all of the pictures?
1 hour 3 minutes
1 hour 13 minutes
2 hours 6 minutes
2 hours 16 minutes
2 hours 26 minutes

The last one

Step-by-step explanation:

Class One

1 Class picture: 10 minutes

21 individuals : 21 * 3 = 63

Class Two

1 class picture : 10 minutes

21 individuals : 3 * 21 = 63 minutes.

Totals

2 class pictures = 10 * 2 = 20 minutes

42 individuals :      63*2 = 126

Total                                   146 minutes

146 minutes / 60 minutes = 146 - 120 = 26

120 minutes = 2 hours

The answer is 2 hours 26 minutes.

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.