4. A treadmill is priced at $280.50. There is an 8% sales tax rate. What is the sales tax of the treadmill in dollars and cents?

Step-by-step explanation:

280.50 * 8%

280.50 * .08%

=22.44 (sales tax rate)

Total= $302.94

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

add 5 subtract 1

step-by-step explanation: