Simplify: –3(y + 2)2 – 5 + 6y

What is the simplified product in standard form?

y2 +
y +

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

Can you me find the missing length. i attached an image.