Sandy bought 3/4 yard of red ribbon and 2/3 yard of white ribbon to make some hair bows. altogether, how many yards of ribbon did she buy?

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?

Find the solution of each of the following.

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle