The original price of a watch was $109. it was on sale for $100.28. what was the discount rate?
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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

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle