add: 5(0.5k-1) + 2 (0.4-k). Answer should be in decimal form.(1 point)

Answer 1

Let's solve the given expression step by step:

5(0.5k - 1) + 2(0.4 - k)

= 5 * 0.5k - 5 * 1 + 2 * 0.4 - 2 * k [Using distributive property]

= 2.5k - 5 + 0.8 - 2k

= (2.5k - 2k) + (-5 + 0.8) [Combining like terms]

= 0.5k - 4.2

So, the answer is 0.5k - 4.2 (in decimal form).