Sara went to her local zoo that featured 24 reptile exhibits. If these reptile exhibits make up 80% of the zoo's exhibits, then how many exhibits does the zoo have in total?
Round your answer to the nearest whole number if necessary.

19

Step-by-step explanation:

You take 80% of 24. and do 24 x 80. Round to the nearest whole number.

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

honesty mood

step-by-step explanation: