How to solve this question by using trigonometric identities:it is given that cos(90°- θ) = 3/4, find the value of tanθ. Thanks a lot.

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

Find an equation for the linear function which has slope -10 and x-intercept -7

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?