Answer:
2.75x+122.5
Step-by-step explanation:
Horse=x
Stork=x+70
Whale=3/4(x+70) = 0.75(x+70) = 0.75x+52.5
x+x=70+0.75x+52.5
2.75x+122.5
Answer: $26.4 Australian dollars
Y=1.2x
Answer:
1, 3, 9, 27
Step-by-step explanation:

You need the first 4 terms, so let n = 1, and evaluate the expression. Then do the same for n = 2, n = 3, and finally n = 4.
n = 1

n = 2

n = 3

n = 4

Answer:
c
Step-by-step explanation: