PLASSS HELP

a. 9
b. 81
c. 3
d. 24

Two numbers have a sum of -19. one number is x. what expression represents the other number?

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?

Paper plates cost $8 per package and plastic utensils cost $5 per package. your supplier delivers 15 packages for a total cost of $90.