A dollar store sells items for $1 and $2. You plan to go there and spend at least $20. Let x stand for the number of
one-dollar items and let y stand for the number of two-dollar items. Write and graph a linear inequality that
models the situation.

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Ahealth-food producer has 250 samples of a new snack to distribute in the mall. the producer has to keep at least 50 samples for display in the health food for the product launch. how long will the samples last if consumers are taking the samples at a rate of 25 every hour