Question

Can someone help me on a relations and functions question .....I'll post the question

Answer 1

Alright, here's how to solve B.

For the first week (7 days) it's 20 dollars per day so it's
$20 x 7 = ?
Then the last three days it's 17 dollars (since the price goes down) so it's
$17 * 3 = ?

Multiply those two and then add up the products and that'll be the answer for b

Answer 2

I got 191

Answer 3

Here's how to solve c.

For the first time she parked at the garage, she had the car there for five days so it's

$20 x 5 = ?

For the second time she parked there, she was there for more than 7 days so first it's

$20 x 7 = ?

And the last day she was there was $17 so whatever your answer is for $20 x 7 you add 17 dollars to and that'll be your answer.

Answer 4

Let me check

Answer 5

$191 is correct (I really hope I'm doing this right :b ) is this k12?

Answer 6

yes it is lol

Answer 7

I got 257 for C now what? lol

Answer 8

That's what I got too..I'm guessing that's right :b

Answer 9

so the differnce would be $57?

Answer 10

for part a)

it costs $20 a day for the first week

so if f(x) is the cost function, then

f(x) = 20x if 0 <= x <= 7 (this is the initial charge per day)

OR

f(x) = 17x if x > 7 (because the cost decreases to $17 a day after 7 days)

Answer 11

where x = number of days parked

Answer 12

Okay that makes sense thank you

Answer 13

yw