Can you help please this is a final exam

You're not supposed to post exam questions, my guy!

Step-by-step explanation:

wait i can't see the full questions so can you post a full picture of the questions? thanks

Step-by-step explanation:

if you post a full pic of the questions i can answer them

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: