1. music systems, inc. allows a 10% discount if a purchase is paid for within 30 days. an additional 5% discount is given if the purchase is paid for within 15 days. brent goodson buys a sound system that originally cost $360. if he pays the entire amount at the time of purchase, how much does he pay for his system after the successive discounts?

$306

Step-by-step explanation:

15/100 = x/360

This is just a proportion, so you would multiply 360 time 15 which is 5,400 then divide that by 100, leaving you with $54. Meaning, he saved $54. If you take her saved $54 away from the original price of $360, you are left with $306 as his final price to pay.

We're not supposed to help with tests.  The police will be here shortly.

Corresponding parts of congruent triangles are congruent.  We assume the vertex letters correspond and we just write all the corresponding parts.

ΔABC ≅ ΔPQR

so ∠A ≅ ∠P  and  ∠B ≅ ∠Q  and  ∠ C≅ ∠R

and AB ≅ PQ and AC ≅ PR and BC ≅ QR

Now we go through the choices:

B, D