Given a line of text as input, output the number of characters excluding spaces, periods, or commas.

Q1 Which of the following statements is true if x (a character array) is added (+) to a y (2 x 2 double)? Select one: a. Variable x will be converted into a double and then concatenated with y to create new ASCII-type variable b. The addition operation (+) cannot be performed c. Variable y will be converted into a string and then concatenated with x to create a new string-type variable d. ASCII values of x are added to y to create a new double-type variable e. It is equivalent to the statement x == y and creates a logical-type variable   Q2 Consider the following non-linear equation where x is the independent variable, y is the dependent variable, and A and B are constants.       Which of the following is the resulting gradient variable in linearised form?   Select one: a. B b. log10(B) c. log(-A) d. A e. exp(B) Q3 Which of the following statements is false for the function header below? function [cat, ox, dragon] = rat(pig, snake)   Select one:…

p.252, icon at Example 2 #2. (a) Find the number of positive integer divisors of 648 = 2334. (b) Find the sum of all positive integer divisors of 648.