How do i find the anwser to this question

Which of the following is a true statement about functions?

Explain how you know that 21/30 is greater than 2/3.

The Punnett square shows the cross for a particular trait between a homozygous dominant parent and a heterozygous parent. What is the probability the offspring will be heterozygous for this trait?

The velocity of a car increases from 2.0 m/s to 16.0 m/s in a time period of 3.5 s. What was the average acceleration?

How do i turn factions to decimals? Such as 2/7 written as a decimal is:

The square root of a 100 is it a whole number or natural number

How do u expand 500,000

How does the volume of a sphere with radius 2cm compare to the volume of a sphere with radius 1cm

6 yards to 36 yards. Find the percent of change. Round to the nearest tenth of a percent if necessary.

Mark, evan, and cayla are playing a game. there are 3 blue marbles, 2 red, and 1 green marble. if mark pulls a blue marble he gets $1. if evan pulls a red marble, he gets a $2. if cayla pulls a green marble, she gets $3.