Evaluate each expression if a = 5, b = 6, c = 4, and d = 3. a. 2ab + cd
b. abc
Evaluate the expression if m = 4, n = 3, and p = 2.
5m – 4n + p

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

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?