Question

Unit 1. Lesson 10 Exit Ticket

Name:

1.) A deep-sea diver descends below the surface of the water at a rate of 5.5 feet each minute. What is the

depth of the diver after 1.3 minutes?

Write an expression to represent the problem:

Solve your expression in the box below and write your answer on the blank provided.

Answer

Answer 1

The required expression for the depth is
`5.5t` feet.

The depth after 1.3 minutes is 71.5 feet.

Explanation:

Let d be the depth of the sea below the surface of the water.

The rate of descending or the rate of increasing the depth,
`r= 5.5` feet/min.

Since, the rate is constant, so,

If the diver reaches the depth,
`d`, in time,
`t`. So,

`r= d/t`

`\Rightarrow d=r* t`

So, for
`r=5.5` feet/min, the required expression for the depth is
`5.5t` feet.

After time t= 1.3 minutes.

The depth,
`d = 5.5 * 1.3 = 71.5` feet.