18.
SPECIAL CASES, Part One
Use the equation 8+x+(-5)=(-4)+x+7 to complete parts (a) through (c).

a. Build the equation on your Equation Mat and simplify it as much as possible. Record your steps and what you see when you have simplified the equation fully. Draw a picture of your final mat.

b. Have each member of your team test a different value for in the original equation, such as x=0, x=1, r=-5,x=10, etc.
What happens in each case?

c. Are there any solutions to this equation? If so, how many?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

What is the solution for the following system of equations? use any method to solve. y = -x +4 y = x - 2 a. ( 4 , -2) b. (2, 1) c. (3, 1) d.(3, -2)