Answer:
x = .98
Step-by-step explanation:
-.5(17x - 24) = 3.4x - 6 + 6.3x
-8.5x + 12 = 9.7x - 6
-18.2x = -18
18.2x = 18
x = .98
Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points)
Part C: How many movie tickets did Erica purchase last month?
A) Let t represent the number of tickets Erica bought. The the equation describing her rebates can be written as
... 3t + 0.80×15 = 18
B) Here's the solution to the equation.
... 3t + 12 = 18 . . . . . . simplify; rules of arithmetic
... 3t = 6 . . . . . . . . . . .subtract 12; subtraction property of equality
... t = 2 . . . . . . . . . . . . divde by 3; division property of equality
C) Erica bougth 2 movie tickets last month.
D.3 to 1, 3:1, 3/1