Simplify using order of operations: 48 \div 12 + 7 \times 2 \div 2 - 1

Chip worked at the animal shelter for 6 hours each week for several weeks. he worked for a total of 42 hours. which of the following can be used to find the number of weeks chip worked at the animal shelter?

Azul has 4 green picks and no orange picks.you add orange picks so that there are 2 orange picks for every 1 green pick.how many picks are there now.

If cos(θ)=2853 with θin q iv, what is sin(θ)?