Question

[3.06]Josie finds a texting plan that costs a flat fee of $10 per month for 150 texts, plus $.20 per text after that. Which cost function represents this scenario if x equals the number of texts exceeding 150 that Josie sends in a month?

C(x) = 150 + .20x

C(x) = 10 + .20x

C(x) = .20 + 150x

C(x) = .20 + 10x

Answer 1

for 150 texts,the cost is fixed $10,so 10 would be the constant in your cost function
as charges are $0.20 per text and x= number of texts,
the total cost will be 0.20x in your cost function
from this can u figure out the answer?

Answer 2

is it the second one?

Answer 3

yes,u got it :)

Answer 4

yay thanks