A spring with a spring constant of 16 N-m is compressed 0.2 m. What is the restoring force on the spring?

A. -1.25N
B. -3.2N
C. -15.8N
D. -80N
My answer is D.

What is the mass of a box that requires a force of 27 N to be accelerated to 4.0 m/s²?
A. 6.8 kg
B. 2.3 kg
C. 31 kg
D. 108 kg
My answer is A.

If someone could check these it would be heavily appreciated. Props to all the Jishka tutors who help out daily, you guys are awesome and appreciated.