18- eliminate the parameter. x = t + 4, y = t2 answer choices: a) y = square root of x + x + 4 b) y = square root of quantity x minus four c) y = x2 + 16 d) y = x2 - 8x + 16

What is the exact area of a circle with a diameter of 50 centimeters? a.87.9 square centimeters b.379.9 square centimeters c.1962.5 square centimeters d.4923.5 square centimeters

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?