Line d passes through points (2,3) and (9,8) . line e passes through (7,9) and (2,16) . are line d and line e parallel or perpendicular

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

What is the approximate difference in tenths between √12 and √15?