Acertain calling card gives the following rate to malaysia. there is a connection fee of $0.39 which allows you to connect for up to (but not including) a minute. for each additional minute or part of a minute, there is a $0.24 cent charge. (for example, for 1 minute up to but not including 2 minutes costs $0.63.) you need to make a 20 minute call.

express this information as a function, where f(x) represents the amount of money charged and x represents the number of minutes which have elapsed.

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.