Which statement is true about a number and its additive inverse?
a. their product is always one.
b. their sum is always one.
c. they are always reciprocals of each other.
d. their sum is always zero.

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?