18-3=15
Originally pay 25 = 75
450-75=375
375 + 75 = 450
C) 18 people were originally going on the trip and 15 are going now.
Idk about D
Answer:

Step-by-step explanation:
step 1
Find the measure of angle C
Remember that the sum of the interior angles of a triangle must be equal to 180 degrees
so
A+B+C=180°
we have
A=57°
B=37°
substitute
57°+37°+C=180°
94°+C=180°
C=180°-94°=86°
step 2
Find the measure of side c
Applying the law of sines

substitute



Answer:
3.9200508e+17
Step-by-step explanation:
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