-14, -12, -10, -8, 5, 7, 9, 11 are the options the boxs have. Please help this is due soon!

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

3x + 4y = 5 x- 3y = -7 solve by substitution