Pl i need hel

Use an inverse matrix to solve the system of equations, if possible.

x + 5y – 3z = –10

–5x + 6y – 5z = –21

–x + 8y – 8z = –25

Question 1 options:

(1,-1,2)

(-6,-5,2)

(-6,-2,-2)

no solution
Graph the region corresponding to the solution of the system of constraints.

f(x, y) = 3y + x
x ≥ 0
y ≥ –2
8x + 12y ≤ 92
11x + 7y ≤ 79
x + y ≥ 5

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%