Question

The interest that Cindy earns on her investment is given by the equation l = 42t where t is the time in years that her money is invested. She makes a table to determine how much money she would earn for different values of t. She selects 5 as a value for t.

What is the corresponding table entry for l?

Answer 1

I = 42t

When t = 5, I = 42*5 = 210

When t = 6, I = 42*6 = 252

When t = 7, I = 42*7 = 294

When t = 8, I = 42*8 = 336

When t = 9, I = 42*9 = 378

When t = 10, I = 42*10 = 420

Answer 2

Substitute 5 to the t of the given equation for the interest, I = 42t. Substituting,
I = 42 x (5) = 210
Therefore, the corresponding table entry for I in the same row as t = 5 is the value equal to 210.