Clouds, fog, or dew will always form when: A. Air reaches the complete saturation point. B. Water vapor is present. C. The temperature and dew point are equal.

A. When air reaches the complete saturation point

Explanation: Air is said to have attained a complete saturation point when air is no longer able to absorb moisture. When Evaporation occurs which is the vaporization process which occurs on the surfaces of liquid such as rivers and other water bodies usually due to heating. The evaporating liquid or moisture is continually added to air which condenses to form cloud, until it becomes saturated and can no longer hold additional moisture which is then converted into dew or fog.

x = 7

step-by-step explanation:

equating the expression for area to the given area

2x² - 7x - 4 = 45 ( subtract 45 from both sides )

2x² - 7x - 49 = 0 ← in standard form

to factor consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 2 × - 49 = - 98 and sum = - 7

the factors are - 14 and + 7

use these factors to split the middle term

2x² - 14x + 7x - 49 = 0 ( factor the first/second and third/fourth terms )

2x(x - 7) + 7(x - 7) = 0 ← factor out (x - 7)

(x - 7)(2x + 7) = 0

equate each factor to zero and solve for x

x - 7 = 0 ⇒ x = 7

2x + 7 = 0 ⇒ 2x = - 7 ⇒ x = -

thus the positive value for x is x = 7

your question is incomplete

explanation: