A store had a sale on baseball cards, so Percy bought several baseball cards to give as gifts. He gave a total of x cards away to 5 friends. Each friend got 4 baseball cards. Write and solve an equation to figure out how many baseball cards Percy gave away.

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.

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

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