Express each of these sums in the form a(b + c) where b and c do not have a common factor. show all work. 1. 6 + 21 2. 27 + 45 3. 32 + 48 4. 30 + 75 5. 88 + 24

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"