What are the solutions to the equation x2 + 6 = 87? a. –10 and 10 b. the equation has no solutions. c. –6 and 6 d. –9 and 9

How do you solve a question like this?

Factor k2 - 17k + 16. a.(k - 2)(k - 8) b.(k - 1)(k + 16) c.(k - 1)(k - 16)

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes