Out of 1500 students at a school 85% made grade check. How many students passed grade check?

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.