6 + (-4) —> 6 - 4 = 2
(-8) + (-14) —> (-8 + (-14)) —> -(8+ 14) —> -(22) = -22
(-12) + 5 —> (-12 + 5) —> -(12-5) —> -(7) = -7
Answer:
y=3x is your answerStep-by-step explanation:
Given : Andre drove 200 Miles using 9 Gallons of Gas
⇒ Andre drives 1 Mile using ![[\frac{9}{200}]\;Gallons\;of\;Gas](https://tex.z-dn.net/?f=%5B%5Cfrac%7B9%7D%7B200%7D%5D%5C%3BGallons%5C%3Bof%5C%3BGas)
⇒ Andre drives (420 × 1 Mile) using ![[\frac{420\times9}{200}]\;Gallons\;of\;Gas](https://tex.z-dn.net/?f=%5B%5Cfrac%7B420%5Ctimes9%7D%7B200%7D%5D%5C%3BGallons%5C%3Bof%5C%3BGas)
⇒ Andre drives 420 Miles using 18.9 Gallons of Gas
Keep these rules in mind:
- (a + b)² = a² + 2ab + b²
- (a - b)² = a² - 2ab + b²
- (a + b)(a - b) = a² - b²
Firstly, solve the exponent and multiplication:

Next, combine like terms:

Next, subtract 4x² on both sides:

Next, subtract 25 on both sides:

Lastly, divide both sides by -20.5. And since you are dividing by a <u>negative</u>, flip the inequality sign:

<u>Your answer is x > 2.</u>