Abean plant grows at a constant rate for a month. after 10 days, the plant is 35 centimeters tall. after 20 days, the plant is 55 centimeters tall.
which equation models the height of the plant, y, after x days

What is the value of x when x + 7 = 21?

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4