70 seconds
and 90 seconds
when will they meet each other at the same time

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

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?