Answer:
Step-by-step explanation:
A complex number is a number which has some real part and some imaginary part.
Standard form of a complex number is represented as
Where 
is the real part,
and 
is the imaginary part.
And 
Given complex number:
Hence, the standard form is .
Answer:
t = -13
Step-by-step explanation:
Given expression:
Solving for t:
It costs $122.4 dollars before the increase.
<h3>
How to calculate percentage of a number. Use the percentage formula: P% * X = Y</h3>
- Convert the problem to an equation using the percentage formula: P% * X = Y.
- P is 17%, X is 7.20, so the equation is 17% * 7.20 = Y.
- Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.
Therefore, It costs $122.4 dollars before the increase.
Learn more about Finding the Percentage here:
brainly.com/question/24862040
The answer is 64x^2+114x+81. Hope this helps.
