Approximately 2\%2%2, percent of the people in the world have red hair. there are about 7{,}000{,}000{,}0007,000,000,0007, comma, 000, comma, 000, comma, 000 people in the world. about how many people have red hair?

Find the values of the variables and the lengths of the sides of this kite.

Huong is organizing paperback and hardback books for her club's used book sale. the number of paperbacks is 12 less than three times the number of hardbacks. huong had 162 paperbacks. how many hardback books were there?

Moesha is (3g+1) years old and shanti is twice moesha age. find the sum of the ages of moesha and shanti in 2 years time. how old will shanti be when moeshas age in twice her present age? find how old moesha and shanti were 4 years ago if g= 5