Plot the rational numbers -12/5 and -2.8 on the number line

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

The bake stars picked 907 apples last weekend at a local orchard they made caramel apples and sold them in the bakery in trays of 6