Can someone help this is very confusing anything helps

Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.

Betty correctly answers 30 questions on your math test there are 40 questions on the test what percent of the questions did she answered incorrectly

Question 10 multiple choice worth 1 points) (09.06) based on the graph below, what is the total number of solutions to the equation f) = ? 10.5 + 13,75 + 11 + 25 + 2.75 -6 -5 4 3 2- -2.75 g(x) 65 -8.25 - 13.75 - one otwo three four