Select the correct answer.

which equation cannot be solved by factoring?

а. х2 + 6х + 9 = 0

b. x2 - x - 6 = 0

c. x2 + 3x - 4 = 0

d. x2 + 5х - 4= 0

What is the percent of increase for a population that changed from 438,000 to 561,000

You call the pizza store and find out that eachpizza has 12 slices. you expect 16 people tocome, and you estimate each person will eat 3slices. how many pizzas should you order

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.