Question

the original price of a bicycle helmet is $9.80. how much will erik pay if he buys it during the sale? sale 70% off!

Explanation:

Step1: Calcular porcentaje a pagar

El precio de venta es el 30% del precio original, ya que se descuenta el 70%.
$100\% - 70\% = 30\% = 0.3$

Step2: Calcular precio final

Multiplicar el precio original por el porcentaje a pagar.
$\$9.80 \times 0.3 = \$2.94$

Answer:

$\$2.94$