Nick works on a tree farm, bundling seedlings. His workweek is 40 h, and he can
complete three bundles per hour. He needs
to choose one of the following rates of pay:
i) $8.75 per hour
ii) $4.75 per hour plus $1.35 per bundle
iii) $2.75 per bundle
a) Write an algebraic expression that
shows Nick's weekly earnings at each
rate of pay.
b) Which rate of pay should Nick choose?
Use your algebraic expressions to

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?