Which would be the most appropriate way to estimate -6.1(0.22)? Check all that apply. a)Use rounding to get -6(0.2), and then multiply.

b)Use compatible numbers, such as -6(0.5), and then multiply.

c)Use the benchmark numbers -6 and 1, and then multiply.

d)Use front-end estimation to get -6(0.2), and then multiply.

e)Round the factors to the nearest whole number, and then multiply.