Answer fast! the test is timed! ruby has a pulse rate of 73 beats per minute and a blood pressure of 121 over 85. if ruby’s blood pressure can be modeled by a sinusoidal function, find an equation of this sinusoid.

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

Restrictions on f(x) = 1/x+5 and g(x) = x-2

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?