Question: Consider the following expression and determine which statements are true. 7/r + 2³ + 11 Choose 2 answers:

(Choice A) The entire expression is a sum

(Choice B) The coefficient of s a sum

(Choice C) The term of 7/r is a quotient

(Choice D) The term 2³ has a variable

Please help, its due in 20 min and its my last question This is from Khan Academy (Parts of Algebraic Expression)

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2