Arandom sample of residents of the county were categorized according to gender (male or female) and whether they supported a proposal to increase the county sales tax rate by one-half percent. the table summarizes the data for the sample.

I fail to understand what exactly you are asking. Could you be more specific and include and image of the table maybe?

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!