exam Maths Puzzle Numerical Ability

Solve the following word problems. Be sure to show the equation you use for the solution.
26) Business and finance. Ms. Jordan has been given a loan of $2500 for 1 year. If the interest charged is $275, what is the interest rate on the loan?

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exam Other Question

Which product would be used to solve the matrix equation below by using inverse matrices?

3 -4 [a] = 6
2 1 [b] 7
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a. 1/11 [1 4] [6]
Given: f(x)=3x-5 and g(x)=-5x+2

1. Find f[g(-1)]
2. Find g[f(4)]