The cubic polynomial $p(x)$ satisfies $p(2) = 1,$ $p(7) = 19,$ $p(15) = 11,$ and $p(20) = 29.$ find \[p(1) + p(2) + p(3) + \dots + p(21).\]

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas

the correct answer is x/3+10≥32

hope this !