Longer question please help ASAP

a. 40÷2.89=m  b. 13

Step-by-step explanation:

i rounded 2.89 to the nearest whole which was 3then i knew in my head that this would be a divsion qustionsince divideing 2.89 with 40 would be hard i did 3 instaed plus 3 id also resonablethen i did 40÷3 witch is 13.3 then rounded 13.3 to the nearest whole witch was 13 13 is the answer

B. 2 1/2 feet. multiply 2.5 inches by 12 to get thirty inches then divide by 12 to get 2.5 feet