Lena starts to use the standard algorithm to solve 39 x 4. Her work is shown below. х
39
4.
6
What number should Lena replace m with?

b

step-by-step explanation:

you divide the cost ($15) by the quantity (6) to get your questions answer. the yo-yo costs $2.50. hope this : )!

step-by-step explanation:

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.