Agroup of students is arranging squares into layers to create a project. the first layer has 5 squares. the second layer has 10 squares. which formula represents arithmetic explicit formula to determine the number of squares in each layer?
a. a1 = 5; an = 5 ⋅ an − 1, n > 0
b. a1 = 5; an = 5 ⋅ an + 1, n > 0
c. a1 = 5; an = 5 + an − 1, n > 0
d. a1 = 5; an = 5 + an + 1, n > 0

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Show all work to identify the discontinuity and zero of the function f of x equals 6 x over quantity x squared minus 36

The balance of susu's savings account can be represented by the variable b. the inequality describing her balance b > $30 . which could be a solution to the inequality?