1) Sir Arthur Conan Doyle used footprint evidence in 29 of the 60 stories he wrote about Sherlock Holmes, the British detective. Holmes used Plaster of Paris to preserve three dimensional footprints. A similar method is used today, although new materials have been developed for use. This method is referred to as . A) casting B) imaging C) lifting D) tracing

D

Tracing

Step-by-step explanation:

Sir Arthur Conan Doyle, author of the Sherlock Holmes stories, was credited as an influence to forensic science due to his character's use of methods such as fingerprints, serology, ciphers, trace evidence, and footprints long before they were commonly used by actual British and American police forces.

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0

i'm sorry i don't know

step-by-step explanation: