Mary works 3 days a week after school. she earns 18 dollars a day. mary wants to have at least $200 saved by summer vacation. how many weeks will she have to work? is this an equation or an inequality?

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

What is the lcm of 16 and 40 ? 24 and 40 ?

Which expression is equivalent to 16 in exponential form? a) 4 × 4 b) 8 × 2 c) 23 d) 24