Apply the commutative property to 13 × 7 × 21 to rearrange the terms and still get the same solution.

a. 13 + 7 + 21
b. 12 × (7 × 21)
c. (13 × 7) × 21
d. 21 × 7 ×13

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius