Find the errors and correct the following mathematical sentences.​

Two rigid transformations are used to map abc to qrs. the first is a translation of vertex b to vertex r. what is the second transformation? a reflection across the line containing ab a rotation about point b a reflection across the line containing cb a rotation about point c

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

Plz hurry evaluate the expression a+b where a=8 and b=19