What are the values of a, b, and c in the matrix addition below?
T 4 1 5 -8
7-10 2 13 L-4
3 30 15
1 -8 -9 Bllo
61 1-4 1 1
§ -1 a 7 12
-12 3 18 b 3
-3 11 1-8 c 171
m
a=-5
b=-9
C=-12
a=-14
b= 15
c=-12

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

Write an inequality and solve each problem. for exercises 11 and 12, interpret the solution.