2020-2021 T-Math-Gr7Reg-T1 and T2-CBT: Section 1 - Students may NOT use a calculator. Question: 1-5
Marissa found
that apply.
shirt that had a 20% markdown on it. If the price of the shirt is represented by x, how much does the shirt cost (excluding tax)? Select all
x(1.00 -0.20)
X-0.80x
X-0.20
ОООООО
0.80x
x(0.20 + 1.00)
0.20x
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Complete Question

Marissa found a shirt that had a 20% markdown on it if the price of the shirt is represented by x how much does the shirt cost excluding tax select all that apply

select all that apply

A. 0.20x

B.0.80x

C.x-0.20

D.x-0.80x

E.x(0.2+1.00)

F. x(1.00-0.20)

B. 0.80x

F. x(1.00-0.20)

Step-by-step explanation:

The Formula for Selling Price when you have percent markdown is;

Selling price = (1 - percentage mark down)× Original price

From the question:

Selling price= Cost of the shirt(excluding tax)

Original price = x

Percentage markdown = 20%

= 0.20

Hence,

Cost of the shirt(excluding tax)

= (1 - 20%)x

= (1 - 0.20)x

= 0.80x

Option B and F is the correct option

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11