198k views
14 votes
63 POINT!!!!! GUYS, I NEED HELP WITH PLSSSSS NO CHEAT THANK YOU!!

63 POINT!!!!! GUYS, I NEED HELP WITH PLSSSSS NO CHEAT THANK YOU!!-example-1
User Tyth
by
8.7k points

1 Answer

7 votes

Answer:

236

Explanation:

We assume the cost is a linear function of the number of lessons. That means the slope is the same everywhere.

Let (lessons, cost) = (x, y). We have (4, 84), (8, 160), (12, y3).

(y2 -y1)/(x2 -x1) = (y3 -y2)/(x3 -x2)

(160 -84)/(8 -4) = (y3 -160)/(12 -8)

76 = y3 -160

y3 = 160 +76 = 236

The cost will be $236 for 12 lessons.

__

The cost function is ...

y = 19x +8 . . . . for x lessons

User Amelvin
by
8.9k points

Related questions

asked Jul 23, 2023 107k views
Mukta asked Jul 23, 2023
by Mukta
8.9k points
1 answer
20 votes
107k views
asked Sep 25, 2023 187k views
Pagep asked Sep 25, 2023
by Pagep
8.5k points
1 answer
16 votes
187k views