Amanda bought two apples and three oranges for a total cost of $3.90. Alex bought 5 oranges and 1 apple for a total cost of $4.75. What is the cost of one orange?

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?

Express -5 2/5 as an improper fraction.

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )