4. At a sale on summer clothing , Jeff bought three pairs of flip-flops and five tank - tops for $ 55 . Tori bought three pairs of flip - flops and two tank -tops for $ 31. What is the price for a pair of Flip -flops and what is the price for a tank - top?

What is the simplified expression for 6(2(y+x))

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?

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1