What is the answer to algebra with pizzazz page 31?

290 times 8 divided by 6 4? 607 divided by 5? What is it called when you remove a common factor? What is 78 900 000 000 expressed in scientific notation? Is the quotient of an integer and its opposite always positive? What is 120 km per second in scientific notation? Room 13' x 17' square ft? What is x plus x in algebra? What happens to an enlarged image when the scale factor of enlargement is one? What is the factor monomial for 30x2y? What is x in 3x-927? Why do you multiply by 1.5 in a box and whiskers plot? What are the negative and positive effect on agriculture? Does the Pythagorean relationship apply to all triangles? -3y plus 15-y equals 39? Which value of x is a solution of the inequality 25x -100 250? How many 4 digit numbers can be formed using the digits 0 1 2 3 4 5 6 7 8 9 if repetitions of digits are allowed? Are exponential functions always concave up? Name 3 devices that can measure an angle? What is the equation for a circle with a center of (3 0) and a radius of 12?