Isabella bought school supplies at the store. She chose a notebook for $3.99, 2 pencils that each cost $1.09, and 1 package of markers for $5.25. What is the BEST estimate of the total cost of these items before tax?

What is the distance between the points (2, 5) and (5,9)?

Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot