The price of bread went from $1.50 per loaf to $2.50 per loaf in four years. find the rate of change of the price of bread. a) $0.15 per year b) $0.25 per year c) $0.55 per year d) $1.00 per year

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

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?