The coins have a mass of 45 grams. How many grams is one coin?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.