Andrew is showing his work in simplifying (-5.7+2.2)-1.1

step 1 (3.2-5.7)-1.1
step 2 2.2-(5.7+1.1)
step 3 2.2-(6.8)
step 4 -4.6

which statement is true

in step 1, andrew used the commutative property
in step 2, andrew used the distributive property
in step 3, andrew used the associative property
in step 4, andrew's answer is incorrect

"princess tower" in dubai is considered the world's tallest residential building, towering to 1 0 1 101 floors! t ( n ) t(n) models the number of tenants living on floor n n of the tower. what does the statement t ( 2 0 ) = t ( c ) t(20)=t(c) mean?

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?