Lara has four packages of baseball cards. The first package has seventeen cards. The second package has twenty-one cards. The third package has twenty-two cards, and the fourth package has sixteen cards. Using front end estimation what is the best estimate for the total number of baseball cards she has? A. 90 B. 80 C. 70 D. 60

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?