Afarmer is planting a straight row of crops with 3 feet between each plant. if 23 are planted, what is the distance between the first and last plant?

Use the graph of the sine function y=2sinθ shown below

Can someone me with this graph problem by the way i need to know the answers by today since this assignment is due ! !

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )