The function y = 4.99 + 1.89(x + 5) can be used to determine the cost in dollars for a monthly gym membership for x months. What is the rate of change of the cost, in dollars with respect to the number of memberships purchased?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y > 2x + 3y is less than negative 3 over 2 times x minus 4part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points)part b: is the point (â’4, 6) included in the solution area for the system? justify your answer mathematically. (4 points)