Which of the following types of information is suited for display on a double line graph? a. annual changes in melody's height and weight from 5 to 10 years old b. number of democrats and republicans in the senate during the past decade c. monthly sales of 2 different types of cars during a one-year period d. all of these answers *must explain*

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2