7.
Which expression is not equal to 3a + 4a?
a. 7a
b. (3+4)a
c. a(3+4)
d. 3+ 4a

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%