At a grocery store, salted peanuts in the shell cost .30 cents per ounce. is $5.00 enough money to buy 1 pound of peanut? if it is, what amount of money will be left over?

Is the orthocenter of a triangle on the inside ?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?