The knitting club sold `40` scarves and hats at a winter festival and made `\$700` from the sales. They charged `\$18` for each scarf and `\$14` for each hat. If `s` represents the number of scarves sold and `h` represents the number of hats sold, which system of equations represents the constraints in this situation?

What is [tex] {7}^{98 + \sqrt{4} } - 3 \times (64 \div 2 + 4 - 36) \times a = a + 36[/tex]?

Name the most appropriate metric unit for each measurement like a length of an carrot

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?