Which of these is a numerical expression?

1. 13+7

2. 5x

3. 3y+4

4.12 - 2n

Solve for x: 4 - 2 (7 + 8x) = 12 - 6 (2x - 7) + 4x

Mrs Washington has 25 students in her class. If each student needs 4 file cards, which equation can be used to find s, the total number of file cards

What is the y intercept for f (x) = 5x + 7

11. A certain alloy contains 14.25% nickel. How much nickel is there in a piece weighing 375 pounds? Round your answer to the nearest hundredth. A. 112.49 pounds B. 12.24 pounds C. 53.44 pounds D. 78.92 pounds 12.

Which choice represents the expanded form of the expression (x - 2) 3

The Tennis Teams of Atlanta need to older tennis balla for the upcoming tournament. They will need 2,367 tennis balls. If each can hold 5 tennis balls, how Many will they purchase

42 is subtracted from 42% of a number. The result is 42. What is the number?

The temperature is changing every day by negative 7 over 18 degrees Fahrenheit. What will be the change in the temperature after 3 days?

The equation of the polynomial function is: f (x) = (x + (2 + i)) (x + (2 - i)) (x + 5) f (x) = (x - (2 + i)) (x - (2 - i)) (x - 5) f (x) = (x - (2 + i)) (x - (2 - i)) f (x) = (x + (2 + i)) (x - (2 - i)) (x - 5)

Andre owned a 1/4 acre lot. He wanted to construct a 120' x 80' tennis court on the lot. How many square feet will remain uncovered after he builds the tennis court?