Evaluating expression
2x^3 - 8y^4
if x=2
y= -1
24
three time the difference of a number and 1 increased by 10.
3(7x + 10)
n + 4 - 20 + 7n
-6n - 16
4x - 5 =15
x = 5
4x - 1 ≤ -37
x ≤ -9
|-a + b^2 x c |
if a=-2 b=3 c=4
28
four more than the quotient of a number 5 is 40
n/5 + 4 =40
2(x-4) - (x+12)
3x - 4
x/4 + 2 = 10
x=32
18 -2x > 4
x > 7
abc+5 / 5a
a=2 b=15 c=-1
3.5
Proportions
6/ a-6 = 3/a-3
a = -1
Multi variable equations
a = bcd solve for c
a/bd = c
3/4x - 6 = 3
x=12
word problems
the sum of two consecutive numbers is 71. find the numbers.
1 =35
2= 36
W^2 + 2xy
x=-3 w=-2 y=1
-2
4/18 = 8/2x + 16
x= 10
ab + cd = e
solve for c
c = e-ab/d
x -17 / 3 = -3
x=8
the sum of two consecutive odd numbers is 44. find the numbers.
1 = 22
2= 23
compound inequality
-8x - 22 > 10 or 16x - 14 >18
x> -4
x>2
absolute value equations
|x + 1| = 6
x= 5
absolute value inequalities
|3x + 12| >_ 9 or 3x+12 <_ -9
x>_ -1
x < _ 7
x >_ -1
x<_ 7
in interval notation
[ -1, infinite)
(infinite,7)
the sum of two consecutive even numbers is 26. find the numbers.
1= 12
2= 14