Question

Tony's Tires has shown growth over the last month that follows the equation Sales = 4(Day of the month) +16. On what day of the month will Tony's Tires double its first day sales?​

Answer 1

Answer:

4+16

=20

20×4

= 80

20+80

=100

Answer 2

Given:

Equation showing Tony's sales:

To Find:

On which day of the month Tony's Tires will double its first day sales.

Solution:

• For solving this question, we will follow the following steps to make appropriate equations:

1. Find out sales of 1st day

• The equation given for sales as a function of days:

             Sales = 4(Day of the month) +16

•       So, for 1st day, sales will be:

               S = 4(1) + 16

               S = 20

So Sales for 1st day are 20.

2. Find what is double of the sales of 1st day.

• Sales on 1st day = 20
• So double of them will be:

                    S' = 20 × 2

               ⇒  S' = 40

So double the sales of 1st day is 40.

3. Find which day sales will double those of 1st day,

• We can find this by substituting value of S' is given equation as:

                   S' =  4(Day of the month) +16

             ⇒  40 =  4(Day of the month) +16

             ⇒  40 - 16 =  4(Day of the month)

             ⇒  24 =  4(Day of the month)

           ⇒ 6  = Day of the month

Hence, Tony's Tires will double its first day sales on the 6th day.​