Iam thinking of a number. it is increased by 7. the sun is 21. what is my number?

Find the quotient. 50a2 – 98b2 -5a +7b

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

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?