Marta is planning a field trip to the zoo. admission to the zoo is $12 per student and $20 per adult. what expression represents the total cost of admission for a group of x students and y adults?

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.