Select the proper placement for parentheses to speed up the addition for the expression 4 + 6 + 5

a. (5 + 6) + 4 b. (4 + 6) + 5 c. 4 + (6 + 5) d. (5 + 4) + 6

How do you answer this question? (step by step)

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

Arecipe calls for 32 fluid ounces of heavy cream.how many 1 pint containers of heavy cream are needed to make the recipe?