Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range. y = negative 5 x squared minus 4 x + 1
a.
D: all real numbers
R: y less-than-or-equal-to 1.8
c.
D: x greater-than-or-equal-to 0
R: all real numbers
b.
D: all real numbers
R: y greater-than-or-equal-to 1.8
d.
D: all real numbers
R: y less-than-or-equal-to 0.2

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

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values