Hich equation is true when the value of x is 8?
a 6x - 20 = 32
b 16 - 1/8 x = 12
c 20 - 0.4x = 13.8
d 1/5 × + 12 = 30

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2