3) Marvin bought a t shirt that was on sale for 20% off. He paid $14.21. for the t-shirt including sales tax of 11 percent. Use this information to answer questions a and b.
a Circle the equation that can be used to find the original price of the t-shirt.
(c - 20c) +.11(e - 200) – 14.21
. 11(x - 20c) = 14.21
11(22.81 - 20(14.21)) = C
116.80c) + (c - 20c) = 14.21
b. Solve the equation and interpret the solution

(a) 14.21 = 0.80x +  0.11 (0.80x)

(b) The original price of the t-shirt was $16.

Step-by-step explanation:

The information provided are:

(a)

Assume that the original price of the t-shirt was $x.

The discounted amount would be, x ( 1 - 0.20) = 0.80x.

The sales tax amount would be, 0.11 (0.80x).

Then the total amount paid by Marvin can be represented by the equation:

Total = Discounted amount + Sales tax amount

14.21 = 0.80x +  0.11 (0.80x)

Thus, the equation that can be used to find the original price of the t-shirt is:

14.21 = 0.80x +  0.11 (0.80x)

(b)

Compute the value of x as follows:

Thus, the original price of the t-shirt was $16.

2nd one in the first row is correct

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500