Which has the best unit rate? 16 oz for $4.25 or 20 oz for $ 4.55 i chose 16 oz but i need to make sure it's right

number of oz per dollar

16 oz / $4.25   (divide 16 by 4.25)

= 3.76 oz / $1    

20 oz / $4.55     (divide 20 by 4.55)

= 4.40 oz / $1  

20 oz for $4.55 is the best unit rate because you have more oz per dollar (so you get more for the same amount of money)

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.