ALGEBRA 1. An equilateral triangle has side lengths that can be represented by X+1 and the perimeter is 12 inches.
2. An equilateral triangle has side lengths that can be represented by X+1. If the perimeter is 12 inches, then what is the value of each side?
(please help me also this is a 2 step equation i need help asap this is due today)

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.

This is so hard and it’s for a test

The quadratic function h(t)=-16.1t^2+150 choose the graph representation