Jane bought seven cards and seven chocolate boxes for her seven friends.
The cards cost total $14, and the boxes cost total $35.
How much was her total bill?
Use multiplication
How much did one card cost?
Use division
One chocolate box?
Use division

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?

Which of the following represents the factorization of the trinomial below? x^2+7x-30