Mathematics

Jessie Mays

13 August, 10:10

At 2:15 PM, the temperature of a substance in a science experiment was 7∘F. The temperature was then recorded at 15-minute intervals. At each interval, the new temperature was 3∘F less than the previous temperature. Question 1 Part A Determine whether each expression could be used to find the temperature of the substance at 3:30 PM. Select Yes or No for each expression. (-3) (5) Yes Yes - (-3) (5) No No - (-3) (5) 7 + (-3) (-5) Yes Yes - 7 + (-3) (-5) No No - 7 + (-3) (-5) 7 + (-3) + (-3) + (-3) + (-3) + (-3) Yes Yes - 7 + (-3) + (-3) + (-3) + (-3) + (-3) No No - 7 + (-3) + (-3) + (-3) + (-3) + (-3) 7 - (3) (5) Yes Yes - 7 - (3) (5) No No - 7 - (3) (5) 7 + (5) (-3) Yes Yes - 7 + (5) (-3) No No - 7 + (5) (-3) Question 2 Part B What was the temperature of the substance at 3:30 PM?