When Colby was born, his parents invested $1,000 in a fund that paid an annual interest of 8%. How old will Colby be when the investment is worth

at least $4,000?

The age of Colby will be years.

The amount after t years is given by,

Where P is principal, r is rate and t is time in years.

Given that,

Substitute values in above equations.

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Given :

When Colby was born, his parents invested $1,000 in a fund that paid an

annual interest of 8%.

To Find :

How old will Colby be when the investment is worth  at least $4,000 .

Solution :

Let, time taken is x years.

So, the formula is :

Therefore, Colby will be 37.5 years old.

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

42%

step-by-step explanation:

we know,

total people = 60

total males = 25

percentage of males

= 25/60 × 100

= 25/6 × 10

= 25/3 × 5

= 125 / 3

= 41.

rounding of = 42%

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