Linear equations and inequalities
solving a word problem with three unknowns using a linear
tahishwa
over the last three evenings, isabel received a total of 75 phone calls at the call center. the second evening, she received 5 fewer calls than the first evening
the third evening, she received 2 times as many calls as the first evening. how many phone calls did she receive each evening?

An equation representing lyle’s hedge-trimming business is a = 12n - 300 where a is the amount of profit or loss in dollars and n is the number of hedges trimmed. how would the graph of lyle’s business change if the equation a = 10n - 300 represented his business? the graph would be flatter. the graph would be steeper. the graph would start closer to the origin. the graph would start lower on the y-axis.

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x