Determine whether each statement is true or false.
statement
true
false
the expressions b÷4 and 14b are equivalent.
the expressions 5z−z and 3z are equivalent.
the expressions a+b+c and 3a are equivalent.
the expressions 3m+3m and 6m are equivalent.

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?

Anyone know these questions? i need ,.

Which of the following vectors are orthogonal to (2,1)? check all that apply