A graph of a quadratic function is shown below. what is the vertex of the parabola shown (30,0) (800,10) (0,600) (10,800)

283 square feet

step-by-step explanation:

good luck

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

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;