2 years ago

X, 1, 2, 3, 4, y, 7, 17, 27, 37,

1 answer:

maw [93]2 years ago

4 0

Answer:

x 1-2-3-4-5-6-7-8-9-10

y 7-17-27-37-47-57-67-77087097-107

Step-by-step explanation:

y increases by 10 each time and x increases by 1 each time. hope this helps :)

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zepelin [54]

Answer: 6 years

Step-by-step explanation:

Formula to calculate compound amount: $A=P(1+r)^t$ , where P= Principal , r=rate of interest, t= time

Given: P = £400, r = 3% = 0.03 , A= 475

Required equation: $400(1+0.03)^t\geq475$

$400(1.03)^t\geq475\\\\\Rightarrow\ (1.03)^t\geq\dfrac{475}{400}\\\\\Rightarrow\ (1.03)^t\geq1.1875$

Taking log on both sides , we get

$t \log 1.03\geq\log1.1875\\\\\Rightarrow\ t(0.0128372)\geq(0.0746336)\\\\\Rightarrow\ t\geq\dfrac{0.0746336}{0.0128372}=5.81385\approx6$

Hence, he needs to invest the money for 6 years to get atleast £475.

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2 years ago