In a pet store the number of dogs is 12 more than three times the number of cats. if the pet store has 21 dogs how many cats does it have

Plot the intercepts to graph the equation

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

Mrs.sling bought a pound of green beans for $1.80. how much will mrs.tennison pay for 3 1/2 pounds of green beans?