Help me pliz ill give u full stars i need help quick fast pliz

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

Can someone me with this problem i don't understand i need

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x