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Magazine Problem 19
If terms have the same ________ with the same exponents, they are called ________ terms. Terms that have different variables or have a variable with different exponents are called ________ terms. The number part of a term is called its _________.
Problem 20
Solve for the indicated variable. \(P=a+b+c\) for \(c\)
Problem 20
To combine like terms, ________ their coefficients and ________ the same variables and exponents.
Problem 20
Fill in the blanks. To solve a linear equation, we isolate the _____ or unknown, on one side of the equation.
Problem 21
If an equation is true for all values of its variable, it is called an _________. If an equation is true for no values of its variable, it is called a _________.
Problem 22
Fill in the blanks. The sum of the measures of the angles of any triangle is ____.
Problem 26
Two crooks rob a bank and flee to the east at \(66 \mathrm{mph.}\) In 30 minutes, the police follow them in a helicopter, flying at \(132 \mathrm{mph}\). How long will it take for the police to overtake the robbers?
Problem 27
Two cars start together and head east, one averaging \(42 \mathrm{mph}\) and the other averaging 53 mph. See the illustration. In how many hours will the cars be 82.5 miles apart?
Problem 27
Simplify each expression, when possible. SEE EXAMPLE 1. (OB]ECTIVE 1) $$9 x+3 y$$
Problem 29
A book can be purchased in hardcover for \(\$ 16.95\) or in paperback for \(\$ 5.95 .\) How many of each type were printed if 14 times as many paperbacks were printed as hardcovers and a total of 210,000 books were printed?
