Practice solving problems involving two-step inequalities.
4 number lines going from negative 6 to positive 10. Graph A has an open circle at 2 with everything shaded to the right. Graph B has an open circle at negative 2 with everything shaded to the right. Graph C has an open circle at 0 with everything shaded to the left. Graph D has an open circle at negative 2 with everything shaded to the left.

Which number line shows the solution to
11x + 14 < –8?

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup