Gina paid $129 for a bicycle that was on sale for 75% of its original price. what was the original price of the bicycle

This is a table of values that follows a given rule or function. each output comes from the input being applied to the rule.

Plz hurry evaluate the expression a+b where a=8 and b=19

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?