Question

1. in this right triangle, the length of the hypotenuse, bc, is _____ units.
2. john has $132.55 in his bank account. he wants to join a guitar class that charges a $15 fee every week. j

n plans to take the class for 12 weeks.
if john pays for 12 weeks for guitar classes from his account, his account balance will be $____

Explanation:

Step1: Calculate the total cost of the guitar class

The cost per week is $15$, and John plans to take the class for $12$ weeks. So the total cost $C$ is the product of the cost per week and the number of weeks.
$$C = 15\times12$$
$$C=180$$

Step2: Calculate the new account balance

John's initial account balance is $B_0 = 132.55$. The new balance $B$ is the initial balance minus the total cost of the class.
$$B=132.55 - 180$$
$$B=- 47.45$$

Answer:

$-47.45$