3.
match the following expressions or equations.
1.
the sum of 12 and 3 times a number
2.
sue's salary is $8.00 times the number of hours worked.
3.
the perimeter of a square is 4 times the length of a side.
4.
2 less than 4 times a number
5.
the product of m and 3 minus the product of n and 4
a.
s = 8h
b.
4n - 2
c.
p = 4s
d.
3m - 4n
e.
12 + 3n

4.
match the number on the left with the proper combination of number types on the right.
1.
5/4
2.
sqrt 15 (sqrt stands for the square root of a number)
3.
15
4.
zero
5.
-10
a.
real, rational, integer, whole, natural or counting
b.
real, rational, integer, whole
c.
real, irrational
d.
real, rational, integer
e.
real, rational

5.
select the proper symbol on the left to make the sentence on the right true.
1.
3.002 ? 3.02
2.
-5/12 ? -7/12
3.
3/5 ? 0.6
a.
=
b.
<
c.
>

10.
match the inequality to description of the graph.
1.
open dot on -4 and arrow to the right
2.
open dot on -2 and an arrow to the left
3.
open dot on -2 and arrow to the right
4.
open dot on -4 and arrow to the left
a.
2x < -4
b.
2x > -4
c.
-x - 2 < 2
d.
x + 2 < -2

13.
the circumference of a circle is expressed by the equation c = 2r. find the radius r when c = 50.24. use 3.14 for .

r = 7.6

r = 8

r = 8.3

r = 9