(4 x 5) ( 4 x 9)
i need help

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

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?