Answer:
D
Step-by-step explanation:
19.99 + 0.99x ; 21.97
19.99 + 0.99x
19.99 + 0.99(2)
19.99 + 1.98
21.97
1)$345.24
2)$23.70
3)$64.88
−6cos( π/3 t)+21
28
cause
Its B
I remember doing this :)