Question

Choose the expression that is equal to 28.3A. 3³+27.2-6.8+2⁴-3.1B. 3³+27.2-(6.8+2⁴-3.1)C. [3³+(27.2-6.8)]+2⁴-3.1D. 3³+27.2-(6.8+2⁴)-3.1

Answer 1

For this case we can solve each case and we have:

A) 27 +27.2 -6.8 +16 -3.1= 60.3

B) 27 +27.2 -(6.8 +16 -3.1)= 54.2- 19.7= 34.5

C) 27 + 20.4 +16 -3.1= 30.1

D) 27 +27.2 - 22-8 -3.1= 28.3

then the correct solution for this case would be:

D)