5x-y=-1+-5x+3y=25add the equations

y = 12

x = 2.2

Step-by-step explanation:

Uhh... I'll first separate those two

5x - y = -1

-5x + 3y = 25

If you add them, you get 2y = 24

y = 12

x = 2.2

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

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.