Wildlife biologists treated a pool with a chemical to reduce the amount A of algae. The amount of algae in the pool is given by the function A(t)=35t2-360t+1050 where r is the number of days after treatment. (A)When will the amount of algae reach a minimum?
(B)What is the minimum number of algae?
(C)How many days after treatment will the amount of algae reach 900?
(D)Graph the function.​

so, converting firstly the mixed fractions to improper fractions and then "adding".

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step-by-step explanation:

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yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;

answer is 8 r5

step-by-step explanation: