how can you make 540 out of four 4s. (add, subtract, multiply, divide, factorial, decimal, combine digits (44 counts as two 4s), repeating decimal, exponent, etc.)

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

Suppose that g(x)=f(x+9) which statement best compares the graph of g(x) with the graph of f(x)

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?