math qs

1.        Draw the graph of the following linear function and give the domain and range.

F(x) = - 1/2x + 5

2.        Solve the following equation.  |x| =3

3.       Evaluate the following expression when x=3 and y+2,  2xy-x^2y

4.       Solve the inequality and write solutions in interval notation.  |2m+3| 13.

5.       Completely factor the expression.  16x^4 - 81y^4

6.       Perform the division.  (y^2 +10y + 21)/(y + 7)

7.       Surface (A) of a sphere with radius (r) is given by A = 4~^2.  Solve for r.

8.       Write 0.0685 in scientific notation

9.       F(x) = -6x – 1, find f(2)

10.   Simplify the expression complete.  ab^-3/3a^-2b^2 ^2

11.   What x values does parabola y=x^2 – 5x + 4 intersect the x axis

12.   Solve the system of equations x + 3z = 10,  -x – 2y+z=10,  3x + 5y +2z = -7

13.   Rationalize the denominator. 2 sqrt7/x + sqrt 7

14.   Do these two lines intersect?  5x + 8y = -5,  -x – 1.6y =14

15.   Compute the distance between two points  ( 1 – sqrt2, - 1) and (2 + sqrt2, 4)

16.   Solve the equation for L .  p = 2L + 2w