How do you write the word phrases into algebraic expressions: The cost of playing tennis is $25 for a membership plus $8.50 per hour on court?
cost($) = 25 + 8.5n
The membership fee is a
#color(blue)"fixed cost"#and does not vary.
The cost for playing will depend on
#color(red)"number of hours played"#this quantity will vary.
If we let the number of hours played be n. Then the cost of playing n hours will be 8.5n.
for 2 hours, n= 2
for 5 hours, n = 5
Cost ($ ) =25 + 8.5n
This means that if you take out a membership and play for 4 hours then.
Cost = 25