Mrs. Yow

Solving Multi-Step Equations

If you could choose any county to visit, would you choose IRELAND?

Interesting facts about red heads:

Red hair is the rarest natural hair color in humans. Only 1-2% of the human population has red hair.

Countries with the most redheads: Scotland and Ireland

Red hair is caused by a variant of the MC1R gene, which is found on Chromosome 16.

More interesting facts…. One of Mrs. Yow’s BFF’s is a red

head! The gene for red hair is a

recessive gene, meaning it is weaker than other genes like the brown hair gene. Because of this, in order to have natural red hair, a person needs to have red haired ancestors present on both the mother's side and the father's side of the family.

  It is associated with fair skin

color, freckles, and sensitivity to ultraviolet light (more prone to skin cancer).

 

Even more interesting facts…. Redheads feel more pain than other

people. 1) Red haired people need

more anesthesia than other people. Studies show that redheads need 20% more anesthesia to knock them out during a surgery that others.

2) Red heads also are resistant to local anesthesia, so trips to the dentist are often feared.

3) Red heads also feel thermal pain much sooner than others.

Cultural reaction to redheads: Varies from ridicule to admiration.

Redheads are often portrayed as “fiery-tempered”. It was noted that this fiery temper may have helped give them the aggression they needed to survive in the harsh northern climates where they originated from.

How does this relate to equations?The Davis Family

wants to save $900 to go to Ireland. They save $45 a week and now have $180. To find how many weeks w it will take to have $900, we can solve the following equation:

180 + 45w = 900

Equations that require more that two steps in order to get the variable alone.

We will solve these equations using the D-C-M-S method.

What are multi-step equations?

D – Distribute to parenthesis

C – Combine any like terms

M – Move all variables to one side

S – Solve (get variable alone)

D-C-M-S METHOD???

4(y-1) =36

D-C-M-S

m+2m-4=14

D-C-M-S

2(x+1)-x=16

D-C-M-S