What is it called when you "plug in" an expression into an equation to find one variable?
Substitution
Solve:
2/5 x 3/4
Simplify your answer.
3/10
15^2
225
An irrational number cannot be turned into a ______.
Fraction
When multiplying numbers in scientific notation, or numbers with exponents, you ______ the exponents.
ADD.
Solve the following systems of equations using substitution:
5x - 2y = 3
y = 2x
x = 3
y = 6
Solve:
3 1/2 x 1 1/4
15/4
or
3 3/4
0.2^ 2
0.04
Convert the following repeating decimal to a fraction:
0.8888...
8/9
(2 x 10^3) x (5 X 10^4)
10 x 10^7
What is the solution to the systems of linear equations below?

(-3, -2)
Solve:
3/5 + 4/6
Simplify your answer.
19/15
or
1 4/15
x^2 = 196
X = 14
Convert the following repeating decimal to a fraction:
0.67676767...
67/99
14 x 10^-6
_________
7 x 10^-5
2 x 10^-1
Solve the following systems of equations using substitution:
x + 3y = 10
x = 3y - 14
x = - 2
y = 4
Solve:
8/15 divided by 4/7
Simplify your answer.
14/15
(1/3)^3
1/27
What is the estimate of the square root of 42?
About 6.48
(3.4 x 10^3) + (2.5 x 10^3)
Write your answer in STANDARD form.
5900
Solve the following systems of equations using elimination:
- x + 5y = 8
3x + 7y = - 2
(-3, 1)
Simplify your answer.
13/5 - 4/3
39/15 - 20/15 = 19/15 or 1 4/15
x^3 = 64,000
40
Convert the following repeating decimal to a fraction.
1.535353...
152/99
(2.7 x 10^-3) - (1.6 X 10^-4)
Keep you answer in SCIENTIFIC FORM.
2.54 x 10^-3