400 people are asked if they drink tea. 7/10 say "yes" and 20% of the people who say "yes" drink at least 3 cups each day.

a) Complete the frequency tree

b) What fraction of the 400 people drink at least 3 cups of tea each day?

(Give your answer in its simplest form!)

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?