What is the value of a? look at image attached

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

Which expression is a factor of 12x2 + 29x – 8? x – 8 2x – 1 3x + 8 4x + 1

Two similar figures have sides in the ratio of 2: 3. if a side of the smaller triangle has a length of 7, what is the length of the corresponding side of the other triangle? 4 10 14 21