Sample response: The student did not distribute the negative when subtracting. Distributing the negative,
the expression is equal to 6b + 4r – 2b – r. Then use
the commutative property to rewrite it as 6b – 2b + 4r
- r. Then you can use the distributive property to write
Which did you consider in your response? Check all
that apply.
When subtracting an expression in parentheses,
you need to distribute the negative.
You can use properties of operations to rearrange
the expression and group like terms in order to
combine them.

Use the information given below, to compare the cost of operating two different vehicles for one month (4 weeks) you are considering two different cars. you drive to work, a 20 mile round trip, five days a week. gasoline costs you $1.50 per gallon car agets 28 miles per gallon, would have $300 a year in maintenance costs, and would cost you $1,500 per year to insure car b gets 19 miles per gallon, would have $500 a year in maintenance costs, and would cost you $1,000 per year to insure costs car a car b gas cost per month insurance cost per month maintenance cost per month $ total cost per month