The slope of a direct variation function is -4. What is the equation of the function? y = 4 x
y = - 1/4 x
y = -4 x
y = x - 4

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Alex took his brother to a birthday party. the party was scheduled to last for 1 and 3/4 hours but they stayed for 4/5 of an hour more. how long did she stay at the party?

What is the sum of these mixed numbers 4 2/3+ 3 1/9