2x-8x+1=49 solve the equation?help asap

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

(: the two box-and- whisker plots below show the scores on a math exam for two classes. what 2 things do the interquartile range tell you about the two classes?

Consider the function below. which of the following functions could be the inverse of function f? pic below