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Please check the explanation.

Step-by-step explanation:

Using the formula

I = Prt

here

P = The principle

t = Time in years

I = Simple interest

r = Annual interest rate

Let us fill the table using the formula:

I = Prt

ROW ONE:

Given

P = $100

r = 5% = 0.05

t = 3

Determine:

I = ?

Using the formula

I = Prt

I = 100 × 0.05 × 3

I = $15

ROW TWO:

Given

P = $500

r = 4% = 0.04

I = $20

Determine:

t = ?

Using the formula

I = Prt

20 = Prt

20 = 500 × 0.04 × t

t = 20 / (500 × 0.04)

t = 20 / 20

t = 1 year

ROW THREE:

Given

t = 7

r = 10% = 0.1

I = $35

Determine:

P = ?

Using the formula

I = Prt

35 = P(0.1) (7)

P = 35 / (0.1×7)

P = $50

ROW FOUR:

Given

P = $200

t = 2 years

I = $6

Determine:

r = ?

Using the formula

I = Prt

6 = 200 × r × 2

r = 6 / (200×2)

r = 6 / 400

t = 0.015

t = 1.5%             ∵ 1.5% = 0.015

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step-by-step explanation: