Acell phone provider offers a plan that costs $30 per month plus $0.10 per text message sent or received. a comparable plan costs $60 per month but offers unlimited text messaging. complete parts a and b. below

a. how many text messages would have to be sent or received in order for the plans to cost the same each month?

in order for the plans to cost the same, *answer* text messages would have to be sent or received

(simplify your answer. type an integer or a decimal.)

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.

∆red ≅ ∆ by rule will give brainiest if possible

How can i differentiate this equation?