Donnie had $25 to spend in the cafeteria for his lunch account. What is maximum number of days that he can eat if each lunch cost $1.75?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10