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.