Laws of exponents
25 x 27
212
Write in scientific notation
432,000
4.32 x 105
5x - 6 = 3x + 2
x = 4
In the equation y = 3x - 1, the 3 is the ___________.
slope
Is the point (3,5) a solution to the equation 4x + 3y = 27?
yes
(6x9 )(3x-5 )
18x4
Write in scientific notation
0.000024
2.4 x 10-5
3(2x + 8) = 4x + 20
x = -2
Rewrite the equation 3x - 5y = -20 into slope intercept form.
y = 3/5 x + 4
What is the equation that represents:
The product of a number and 4, decreased by 7 is 24.
4x - 7 = 24
3x0
3
(7.2 x 105) + (8.9 x 105)
1.61 x 106
x/5 + 7 = 9
x = 10
What values of x would you put in the table for the equation y = 2/3 x - 5
-6,-3,0,3,6
What is the slope of a horizontal line?
0
Simplify completely
2-4
1/16
(8.1 x 104)(2.9 x 105)
2.349 x 1010
1/3 (6x + 9) = 1/2 (8x - 4)
x = 2.5
What is the equation that created this table
x y
1 10
2 14
3 18
y = 4x + 6
What is the slope between the points (-3,6) and (7,-2)
-4/5
(3x4)3
27x12
The population of Whoville is 5.6 x 104. The population of Narnia is 4.48 x 107. How many times greater is the population of Narnia than the population of Whoville?
800
1/5 (15x - 10) + 4 = 1/3 (9x + 6)
infinite solutions
A plumber charges a flat fee of $50 and then $75 per hour. Write an equation in slope intercept form to represent this situation.
y = 75x + 50
Inside a stable, there are horses and people. There are 50 legs in total. Write an equation to represent this situation.
4h + 2p = 50