Select the correct answer. Lewis works as the head of an emergency services unit in the United States. He and his teammates use a geographic information system (GIS) quite often. Which benefit could the use of GIS provide to Lewis and his team?
A.
It would help them predict natural disasters.
B.
It would help them find the shortest and safest routes to reach hospitals during emergencies.
C.
It would help them arrange for the necessary medical equipment required during emergencies.
D.
It would help them to better handle queries related to emergencies.

B) it would help them find the shortest and safest routes to reach hospitals during emergency

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