Rena wrote all integers 1 to 12. How many digits did she write

Rena wrote 15 digits

Rena wrote 15 digits.

Step-by-step explanation:

Starting with 10, you start adding 2 for every 2 digit number, so for 10, 11, and 12 you add 6 all together. 9+6= 15.

yes

yes yes yes

step-by-step explanation:

well if you round, things become much more simple. round 5.95 to 6, 4.25 to 4, and 1.05 to 1. now, add 6+4+1 and that would equal 11. so the items together would equal to about $11.