# Algebra Questions

## Question

1. Solve by elimination or substitution: 4x+ 2y = 11 and 3x + 5y =7. (Points : 2)
Question 2. 2. Barbara invested a \$1500 inheritance at the Golden One Credit Union, which pays 8 % interest compounded daily. What will her investment be worth in 10 years?
Question 3. 3. Find the amount due on a loan of \$ 12,500 at 7.5% simple interest at the end of 19 months.
Question 4. 4. Find the inverse matrix .
[2 -1]
A= [3 4]

Question 5. 5. Given Matrix A = [ 2 1 0 ] and Matrix B = [ 0 -1 5] . Find AB. (Finad A times B)(A is a 1X3 and B is a 1X3 matrix) (Points : 2)
Question 6. 6. Solve for x.
Log x = 4 (Points : 2)

Question 7. 7. Solve for x.
6˟ = 20 (Points : 1)

Question 8. 8. Solve for x.
ln x = 2

[ 5 8] + [0 6]
[ 0 -5] [ -6 2]

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