Hi, can someone please help to explain by step-by-step instructions (in detail) in the most simplest way and clear to understand. Would Greatly appreciate it.
1-
The Charge for a telephone call between City R and City S is $0.42 for each of the first 3 minutes and $0.18 for each additional minutes. A certain call between these two cities lasted for x minutes, where x is an integer. How many minutes long was the call?
(1) the charge for the first 3 minutes of the call was $0.36 less than the charge for the reminder of the call.
(2) The total charge for the call was $2.88
2-
For all intergers n, the function f is defined by f(n)=a^n, where a is constant. What is the value of f(1)?
(1) f(2) = 100
(2) f(3) = - 1,000
1-
The Charge for a telephone call between City R and City S is $0.42 for each of the first 3 minutes and $0.18 for each additional minutes. A certain call between these two cities lasted for x minutes, where x is an integer. How many minutes long was the call?
(1) the charge for the first 3 minutes of the call was $0.36 less than the charge for the reminder of the call.
(2) The total charge for the call was $2.88
2-
For all intergers n, the function f is defined by f(n)=a^n, where a is constant. What is the value of f(1)?
(1) f(2) = 100
(2) f(3) = - 1,000
Last edited by phoenix9801 on Mon Jul 12, 2010 1:52 pm, edited 1 time in total.
