A balloon is at an elevation of 500 feet. It rises for 3 minutes at a rate of 10 feet per minute and then descends for 5 minutes at a rate of 7 feet per minute. What is the new elevation of the balloon?

What number must you add to complete the square x^2+12x=16

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca