Based on phythagorean identities which equation is true

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°