A rancher has a herd of black cows and red cows. In total he has 65 COWS. The number of black cows is 7 less than triple the number of red cows."
a. Write two equations with two
variables to represent the
information in the problem,
b. How many red cows does the
rancher have? How many black
cows are there?(Write the final
answer as a sentence.)

Pls! does anybody know a shortcut for answering these types of questions in the future?

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.