Aparabola has a vertex at (0,0). the focus of the parabola is located on the positive y-axis.

in which direction must the parabola open?

In upward direction parabola is open.

Step-by-step explanation:

If focus is located on Y-axis then graph of parabola must be open in upward direction.

the graph is shown in figure-1

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this is the answer for you hope it

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950