What is the easy way to learn a math section before a test?

Ruth is making a necklace for a friend. she has 3 different types of clasps, 2 different chains, and 5 different cnarms. if she only puts one charm on the necklace, how many different necklaces could she make? a) 3 b) 10 c) 25 d) 30

The function, f (x) = 70n-400, models the profit the instructor of guitar class per month, where n is the number of students enrolled in the class. How many students must be enrolled in the class for the instructor to make a profit?

10 to the power of 3 times what equals 630

Rewrite the quadratic function in the form that best reveals the zeros of the function: f (x) = 2 (2x^2+4x) + 3 f (x) = ?

Eight times the reciprocal of a number equals 2 times the reciprocal of 9. Find the number

The graph of function f (x) = 3x-6 is shown below. What is the zero of the function? A) 3 B) 2 C) - 2 D) - 6

Choose the best answer to explain whether the question is statistical or not statistical. How far from work does Jeremy live?

How many solutions does 6a - 3a - 6 = 2 + 3 have?

Why is there so much snow in Colorado right now

When two identical ions are separated by a distance of 4.2*10-10, the electrostatic force each exerts on the other is 5.2*10-9?