Which of the following represents a unit rate

a) $4

12 books
b) 5 pages

2 minutes
c) 80 beats

1 minute
d) 72 inches

2 yards

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.