At a school, the ratio of students who take the bus to students who carpool is 3:2. 100 students take the bus.
If estimating, what two numbers would serve as bounds for the
number of students who carpool?
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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?

Hundred and tens tables to make 430 in five different ways

Yvaries directly as x. y =90 when x=6. find y when x=13