Which of the following are possible equations of a parabola that has no real solutions and opens downward?
1.y > = -(x + 4)^2 - 2
2.y > = -(x + 4^2 + 2
3.y > = -x^2 - 2
4.y > = (x - 4^)2 + 2
5.y > = -(x - 4)^2 - 2

Arectangle has an area of 54 square feet. if the length is 3 feet more than the width, find the dimensions of the rectangle.

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.