Cayden has several screws on a scale, and the scale reads 80.955g. Cayden adds 1 more screw, and the scale reads 84.81g.
What is the mass of the last screw Cayden adds?

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.