Which of the following expressions are equivalent? Why? If an expression has no match, write two equivalent expressions to match it.
a. 2(x + 4)
b. 8 + 2x
c. 2x + 4
d. 3(x + 4) - (4 + x)
e. x + 4

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle