Determine whether the given number is a solution of the inequality.x ≥ 9, 9

Solve.10y – 30 = 4y

Solve using the addition and multiplication principles.5 + 3x < 16

Add and, if possible, simplify.- +

Solve the problem.A picture costs $320. The sales tax is $27.20. What is the sales tax rate?

Solve.7x – (3x – 1) = 2

Find fractional notation for the ratio. You need not simplify.Of a family’s $990 weekly income, $99 usually goes toward groceries. What is the ratio of the amount spent on groceries to weekly income?

Graph the inequality.x < 0

Translate to an equation and solve. When necessary, round to the nearest hundredth.What is 2% of $257?

Find decimal notation.86%