Her estimate is lower than her actual cost because her total is 72.87 she is off by 1.72 because she only added 42,17,and 12 and forgot all about adding the cent or the .60,.38,and the .89.
Answer:
the answer is 36 years old
Step-by-step explanation:
first you would put them in an equation like this... 41-5
then you would subtract them and get 36 years old
This is your answer (x-a).g(a)
The complete pattern is: 512, 256, 128, 64, 32, 16, 8, ( and extended ) 4, 2, 1!
I do this pattern in my head literally all the time!