N1917 the cost of a first-class postage stamp was 3¢. in 1974 the cost for a first-class postage stamp was 10¢. what is the percent of increase in the cost of a first-class postage stamp?

233.33 %.

Step-by-step explanation:

The increase is 10 - 3 = 7c.

Percentage increase =  100 * 7 / 3.

= 700 / 3

=  233.33 %.

hope it

step-by-step explanation:

x^(1/6) · x^(1/6) · x^(1/6)   ·x^(1/6) = x^(4/6)   since we add the exponents

4/6 can be simplified to 2/3

the simplified form is x^(2/3)

answer: it's d

step-by-step explanation: