Arnie's car used 100 cups of gasoline during a drive. he paid 3.12 per gallon for gas. how much did the gas cost?

You wanted to draw an enlargement of design that printed on a card that is 4 in by 5

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.