A small bag has a penny, a nickel, a dime, and a quarter. A child chooses 2 coins from the bag at random. What is the probability that the combined value of the chosen coins is less than 10 cents?

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?

Write the following as a base and exponent

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)