Which expressions are equivalent to the one below? check all that apply : ) 5^x a- (15/3)^x b- 5*5^x-1 c- 15^x/3 d- 15^x/3^x e- x^5 f- 5*5^x+1

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

Y=21.95x+10 y=22.45x solve by substitution