Solving Equations
Solve for x.
3x+5-x=25
x=10
Evaluate.
162
256
Write in standard form.
3.67 x 104
36,700
Write the expression: 4 more than twice x.
4+2x
Define reciprocal.
multiplicative inverse; flipped fraction
Solve for x.
2(x-3)=3x+7-2x
x=13
Simplify the expression.
45 x 47
412
Write in standard form.
4.879 x 10-2
0.04879
Write the expression: 16 less than one-half x.
Evaluate.
49 / 7 x 8 - 5
51
State the number of solutions.
4x-12=4x+12
Simplify the expression.
(32 x 52)/(5 x 5)
32
Write in scientific notation.
450,000
4.5 x 105
Write the expression: 2 times the difference of x and 5.
2(x-5)
Evaluate.
32 - 2(10 + 4) x 2
-47
State the number of solutions.
3-2(4-x)=3(x-4)+7
One solution, x=0
Simplify.
24 x 75 x 2
145
Write in scientific notation.
0.0078
7.8 x 10-3
Write the expression: 13 more than one-half the sum of x and 7 minus 3.
13+1/2(x+7)-3
What does the word "quotient" mean in math?
The answer to a division problem.
Write y in terms of x. THEN, find the value of y when x=-2.
2y-3x=7x
y=5x
y=-10
State the vocabulary word and definition for the different parts of exponential notation.
an
Base: number being multiplied by itself.
Exponent: number of times base is multiplied.
Convert 1.78 km to cm.
178,000 cm
Write the expression: 4 times the quantity of 8 less than x plus 47.
4(x-8)+47
What does the "k" represent in a direct proportion equation y=kx.
Constant of proportionality