One morning, Annie stood straight in her yard and cast a 3-foot shadow on the level ground. If the top of Annie's head is 5 feet from the tip of her shadow, how tall is Annie? Answers:
A:3.5 ft
B:5 ft
C:4 ft
D:4.5 ft

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

How can you check that you have correctly converted frequencies to relative frequencies?

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?