A particular english class has 40 students. as the students leave the room, only 28 students are left after three seconds. what is the rate of change of the number of students in the classroom each second?

The difference of two numbers is 20. Their sum is 14. Find the two numbers.

If ƒ (x) = 2 x 2 + 3, then ƒ (x - 1) = 2 x 2 + 4 x + 5. True or False

The next model of a sports car will cost 12.7% less than the current model the current model cost is 42000 how much will the price decrease in dollars what would be the price of the next model

License plates are made using 2 letters followed by 3 digits. How many plates can be made if repetition of letters and digits is allowed? a. 100,000 c. 67,600 b. 676,000 d. 11,881,376

Round 104,547 to 3 significant figures

Is x=-7 an equation that describes a function

Arnold's entire workout consisted of 10 minutes of warm up exercises 25 minutes of lifting weights and 15 minutes on the treadmill what was the ratio of the number of minutes he lifted weights to the total number of minutes of his entire workout

Lines a and b are perpendicular. The equation of line a is = 13+3 y = 1 3 x + 3. What is the equation of line b?

Which graph shows a dilation of the rectangle with a scale factor of? Rectangle with vertices: (negative 3, 0), (0, negative 3), (3, 0), and (0, 3). Rectangle with vertices: (negative 2, 0), (0, negative 2), (2, 0), and (0, 2).

The graph represents this system of equations. What is the solution to the system of equations? y=4 [x = 3 - 1 / 4X O (-2,4) 0 (3,4) O (4,-2) 0 (4,3) 3