Which expression is equivalent to: 1.3m - 14.5n + 11.8m + 8.6n

A.13.1m - 5.9n
B.13.1m + 5.9n
C.10.5m - 5.9n
D.10.5m + 5.9n

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Luisa sells stuffed animals. she sells her stuffed elephant for $34.90, and the sales tax is 6% of the sale price. about how much is the sales tax on the elephant?

In a city, 6th and 7th avenues are parallel and the corner that the pizza palace is on is a 54° angle. what is the measure of the angle that is made with 7th ave and broadway on the corner of the shake hut?