What is the answer to this a plus 2b?

How many solutions are in this problem 6x plus 15 6(x-3)? How tall is Madonna in cm? When does positive externality exist? How many hours is it from 3pm to 11pm? What is does unabate means? A pattern of notes repeated several times in a row at different pitches is called a? How many inches are in 5 yards 2 feet? Is 203 prime? How many auto accidents occur per day in Houston? What are the examples of adverbs of doubt? Draw flow chart to square of numbers from 1 to 20 20? What of these helps scientist to make accurate calculations? What is an expression using exponent that has a value between 0 and 1? What is 95-75? What is the divisor of 19? A school has 240 pupils 40 are boys how many pupils are girls? How do you write 0.75 million? How many words can be formed from the letters of the word IMAGINARY so that the vowels never come together? What is a length of a side of a square with a perimeter of 30 meters? Difference between a constant and a coefficient?