21. BASEBALL CARDS Cristiano bought 24 baseball cards for $50. One type costs $1 per card, and the other cost $3 per card. Define the variables, write equations, and solve to find the number of each type of card he bought.

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?

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.