Answer:
840
Step-by-step explanation:
7, 14, 42, 168, ?
7 x 2 = 14
14 x 3 = 42
42 x 4 = 168
you see the pattern?
hence,
168 x 5 = 840 (ans)
Answer: 47.5
Step by step:
5x+y (x=9)(y=2.5)
5(9)+2.5
45+2.5
= 47.5
Answer:$1500was invested in the account that gained 15% and $15500 was invested in the account that lost 5%.