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During 30 minutes on the treadmill, LaToya burned 20 calories per minute. What is the rate of change of the function that represents this situation?
A
10 calories per minuteB
20 calories per minuteC
30 calories per minuteD
50 calories per minute23
Which linear equation has a slope of 3 and a y-intercept of –2?
A
y = 3x + 2B
y = 3x – 2C
y = –2x + 3D
y = –2x – 324
A computer had 2 gigabytes of data stored on it when Jackie bought it, and she is storing an additional 3.5 gigabytes per year, as shown in the table below. Which of these statements is correct about the linear function that represents this situation?Amount of Data Stored on Jackie’s ComputerTime (year)01234Gigabytes of Data22 + 3.5 = 5.55.5 + 3.5 = 99 + 3.5 = 12.512.5 + 3.5 = 16
A
The initial value represents the 2 gigabytes of data stored on the computer when Jackie bought it, and the rate of change represents the 3.5 gigabytes per year that Jackie is storing.B
The initial value represents the 2 gigabytes per year that Jackie is storing, and the rate of change represents the 3.5 gigabytes of data stored on the computer when Jackie bought it.C
The initial value represents the 3.5 gigabytes of data stored on the computer when Jackie bought it, and the rate of change represents the 2 gigabytes per year that Jackie is storing.D
The initial value represents the 3.5 gigabytes per year that Jackie is storing, and the rate of change represents the 2 gigabytes of data stored on the computer when Jackie bought it.25
What is the slope and the y-intercept of the line on the graph below?
A
slope = –4, y-intercept = 1B
slope = –4, y-intercept = 4C
slope = , y-intercept = 1
D
slope = , y-intercept = 4
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