13. mike says when you subtract (3.2 x 10") from (7.8 x 10') the answer is 4.6 x 10. what is wrong with his reasoning?
a) the correct answer is 7.48 x 10'. he should have adjusted the decimal and changed the exponent to 3 before
he subtracted.
b) he isn't wrong. that is the correct answer.
c) the correct answer is 7.48 x 10. he should have adjusted the decimal and changed the exponent to 4 before
he subtracted.
d) the correct answer is 11 x 10. when he changes the exponent to 3, he adds the coefficients.