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)

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

What is the area of the trapezoid shown

Which two angles in the figure are adjacent angles?