Write a mathematical expression to model the following situations. 15. The total cost of a meal, when the price of a pizza is $5 and the price of breadsticks is $3.

16. The total number of wheels in a parking lot, when a car has 4 wheels and a motorcycle has 2 wheels.

17. The total number of legs of insects in a field, when a spider has 8 legs and a cricket has 6 legs.

Write a real-world word problem that can be solved by adding 34.99 and 5.79. then solve

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

The probability of winning something on a single play at a slot machine is 0.11. after 4 plays on the slot machine, what is the probability of winning at least once