Askier is trying to decide whether or not to buy a season ski pass. a daily pass costs $79. a season ski pass costs $300. the skier would have to rent skis with either pass for $20 per day. how many days would the skier have to go skiing in order to make the season pass less expensive than the daily passes?

4

Step-by-step explanation:

With either pass you have to add $20 per day, so you can ignore that

Assuming he goes "x" days to sky you can calculate the days he has to go to equal $300.

300 = 79x

x = 300/79 = 3.8 days

If he goes 4 days to sky it costs 316, so in that case its cheaper to buy the season pass

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

i think the answer is b