The increase is D: 50% because the 1 in the parentheses stands for the 20 that was already there, with the .5 being the amount that’s actually being increased. 0.5 translates to 50%, so the answer is D.
Answer: 24 model airplanes can be made in 2 hours.
Step-by-step explanation:
Answer:b
Step-by-step explanation:
Answer: sometimes
Step-by-step explanation: