How Do I solve t hi is problem

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)