Question

Round #7 7) In 2018, the United States Postal Service (USPS) raised its rates for mailing letters. The new charge was $0.50 to mail a letter weighing up to 1 oz. and $0.21 for each additional ounce. Which function would determine the cost of sending a letter through the USPS? *

Answer 1

We know that

• The new charge was $0.50 to mail a letter weighing up to 1 ounce, and $0.21 for each additional ounce.

Based on the given information, the expression is

$y=0.50+0.21x$

Where x represents additional ounces, and y represents a cost.

Hence, the function is

$f(x)=0.21x+0.50$