Which quadrilateral will always have 4-fold reflectional symmetry? trapezoid
rhombus
square
rectangle

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read