Answer:
here you go
Step-by-step explanation:
an=9432+9432*0.075(n-1)
n>1
second problem
9432+9432*0.075(n-1)
plug in 15
9432+9432*0.075(15-1)
multiplication
9432+9903.6
add
19335.6
13 pieces
Trust me.
y=3x+9 I'm pretty sure
2.65 + 3.78 = 6.43
B, D are equal to 6.43
the third angle= 180-x-(4x+15)
if we subtract the two other angles the result will be the measure of the last one