Answer:
Step-by-step explanation:
The total cost would be "Y".
"x" is would be "per text message".
12 cents per text message would be .12x.
And then, on top of that, we have to pay $30 per month. ( + 30 )
Put together, the equation should be y = .12x + 30.
The answer is <span>A –x^2 + 3x + 15
</span>
3x² + 6 – 2x + 5x – 4x²<span> + 9
Rearrange it:
</span>3x² + 6 – 2x + 5x – 4x² + 9
= 3x² - 4x² - 2x + 5x + 6 + 9
= -x² + 3x + 15
Answer:
8√3 ≈ 13.86
Step-by-step explanation:
6√2 - 4√3 + | 3√(2²•2) -8√3 | + 2√2²•3
Every 2² get our from the square root and loses the ² :
6√2 -4√3 + | 2•3√2 -8√3 | + 2•2√3
Solve the multiplications and taking of the | | , the signal inside it changes:
6√2 - 4√3 +8√3 -6√2 +4√3
Now you group the similar terms and solve the possible operations:
6√2 - 6√2 +4√3 - 4√3 + 8√3
8√3 ≈ 13.86
You'll have to divide 2.2 and 11 getting you 5, 11/2.2=5, just use your TI-84 plus calculator
