Write the following expression in exponential form:

1.6 × 1.6 × 1.6 × 1.6

1.6^4 because that is the same thing as 1.6 x 1.6 x 1.6 x 1.6

Step-by-step explanation:

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they would have to work 32 hours.

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.