If both skilled workers and technicians received a raise of $0.50 and $0.70 respectively, what is the increase in the weighted average of all wages paid by the firm?

A)$0.29
B)$0.42
C)$0.58
D)$0.60

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Two airplanes start at the same place and travel in opposite directions, one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4