Pablo is running a 15.5-kilometer race. which number sentence will tell how many meters pablo will run if he finishes the race?
a. 15.5 × 100
b. 15.5 ÷ 1,000
c. 15.5 ÷ 100
d. 15.5 × 1,000

The answer would be D because there are 1000 meters in one kilometer 

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)