kailey and tom both work at grocery stores as cashiers for $7.68 per hour. this week kailey worked 5 more hours than tom in overtime. write an expression that represents the weeks' wages for kailey and tom if represents the number of hours tom worked​

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Find the quotient. 50a2 – 98b2 -5a +7b

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items