which equation is correct regarding the diagram of circle o?
m∠xzy = (a + b)
m∠xzy = (a – b)
m∠xoy = (a + b)
m∠xoy = (a – b)

if im not mistaking its

step-by-step explanation:  

vhhhbnbb. ddben jenner v

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

.

that would be a prism, if not right, feel free to correct me