Question

an aerobics class is being offered onnce a week for 6 weeks.the registration fee is $15 and the cost for each class attended is $10.write a function rule to describe the total cost of the class.find a reasonable domain and range for the function.

Answer 1

what have you done so far?

Answer 2

nothing

Answer 3

for the first part, its $15 flat fee, then $10 per class..., so we know we take 15+(10 times number of classes), so we can write it as :
f(x) = 15+10x

it is rather easy if you just take it 1 step at a time when reading the problem your given

Answer 4

the reason we write it as f(x) is cause there asking for a function to be written

Answer 5

for the domain, we have 6 total weeks, but remeber were starting from scratch (0), so:
D: { 0, 1, 2, 3, 4, 5, 6 }
for the range we have 15 dollars to start, plus each we we must add 10 dollars to the total, the total will be the next number of the range function...
R: { 15, 25, 35, 45, 55, 65, 75 }

its not asking to answer the function only write a function so im not thinking it wants the answers, only how to get them so thats why i list the domain and range that way

Answer 6

so the whole questions answer would be:
f(x) = 15+10x
D: { 0, 1, 2, 3, 4, 5, 6 }
R: { 15, 25, 35, 45, 55, 65, 75 }

do you understand it now?