Which expression is equivalent to (r^-7)^8

a. r^42

b. 1/r^42

c.-7r^6

d. 1/r

❤️ (geometry) does the construction demonstrate how to copy an angle correctly using technology a) yes; the distance between points a and f was used to create circle h b) yes; the distance between points f and g was used to create circle h c)no; the distance between points a and f was used to create circle h d) no; the distance between points f and g was used to create circle h