So first, you should try to write an equation to fit the problem.
You know Alice already read 91 pages. That number won't be affected by the variable, d, the number of days. 91 is your constant that will be added to the part affected by your variable.
You also know Alice is reading 15 books everyday. That number will increase by 15 with every day that passes, so the expression 15d can be used to find how many books she has read since she has decided to continue the book.
You know p is the total number of pages she has read, so set p equal to the sum of the the number of books read every day + the constant (number of books she has already read): p = 15d + 91
Now put values in for d to find p: When d = 2, p = 15(2)+91 = 121 When d = 4, p = 15(4)+91 = 151 When d = 6, p = 15(6)+91 = 181 When d = 8, p = 15(8)+91 = 211
It holds the legs up. there is a right angle which is the little box in the 90 degree corner:) the hypotenuse is always the longest part on the triangle which you can not simplify:) so the right triangle has legs that you can simplify:)
