Which statement is the biconditional statement of the conditional statement: If a=b, then b=a. If b=b, then a=a.
If b=a, then a=b.
If a=c, then b=c.
a=b if and only if b=a.

What expression is equivalent to 42x-56y

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?