The sum of the ages of tessie and rhio is 54 years. if tessie's age is subtracted from twice of rhio age the result is 6 years. find the age of each.

answer:

9

Step-by-step explanation:

because it says tessie and rhio is 54 yrs and subtrscted and the result should be 6 and 9x6=54

answer:

Tessie is 34 yrs old

Rhio is 20 yrs old

Step-by-step explanation:

let x - age of Tessie

y - age of Rhio

x + y = 54 y = 54 - x --- eq. 1

2y - x = 6 eq. 2

2(54 - x) - x = 6

108 - 2x - x = 6

3x = 108 - 6

3x = 102

x = 34 --- age of Tessie

y = 20 age of Rhio

To check

2y - x = 6

2(20) - 34 = 6

40 - 34 = 6

## here we have the value of input is distance and the output value is for the cost.

★ in case f(d) represent the fare function of distance.

★ then the function would be like this : -

f(d) = {8 , 8 + 1.5(d)}

here if 0 < d ≤ 4

when if d > 4

★here the notation d simplify the greatest integer applied to d.

★ the greatest integer ≤ to d

e.g : -

(4.1) = (4.9) = 4