Solve the inequality x + 18 ≤ - 3?
please help i am very confused :,)

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

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

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.