A jeweler purchased 5 oz. of gold and 10 oz. of platinum for a total cost of $2375. In a second purchase at the same prices, the jeweler bought 8 oz. of gold and 7 oz. of
platinum for a cost of $2225. What is the cost per ounce of the gold and the platinum?

idk

step-by-step explanation:

hello,

as we don't know if g(x) is continue,

answer b

f(x)=2x²-8x+1=2(x²-4x+4)+1-8=2(x-2)²-7

vertex is (2,-7) ( a minimum since coefficient of x² is > 0)

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d