Item 1 DIRECTIONS: Use this information to answer Parts A, B, C, and D.

As part of an experiment, scientists decrease the temperature in a laboratory freezer as shown.

A photo of a scientist measuring the temperature in the freezer is shown. The caption reads Experiment: five-tenths degree Fahrenheit decrease three times per hour.

Question 1
Part A

Complete the expression to represent the change in the freezer’s temperature at the end of 2 days.

answer: sine

step-by-step explanation:

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4