Julie Crowley

To provide for retirement an employee deposits R at the end of each month in an account that earns $perc% annual interest compound monthly. What is the future value of the annuity in nyears?

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An investment of €x invested today will give a return of €y in n years time Calculate the net present value (NPV) of the investment given that the discount rate is 3.5% per annum.

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An investment of x invested today will give a return of €y in n1 years time and a further €z n2 years from today. Calculate the net present value (NPV) of the investment given that the discount rate is perc% per annum.

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Compare two savings accounts with different interest rates.

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Given a table of the number of days in which sales were between £x1000 and £(x+1)1000 find the relative percentage frequencies of these volume of sales.

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angle between two vectors

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Given vectors $\boldsymbol{a,\;b}$, find $\boldsymbol{a\times b}$

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Rounding decimals.

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Expand $(ax+b)(cx+d)$.

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Find the mean, median and mode of a list of 10 test scores.

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A credit card company charges compound interest at x% per month 
on unpaid balances.

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A savings account earns compound interest at 1.5% per month.
Calculate the equivalent annual rate of interest

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Converting Binary to Decimal

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rearranging the Michelas-Menten equation to make the substrate the subject.

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Rearranging equations by multiplying or dividing: One step

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Instructions on inputting ratios of algebraic expressions.

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When throwing a dice once what is the probability of ....

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Profit and Loss, Percentages

Finding the cost including VAT

Questions about complex arithmetic; argument and modulus of complex numbers; complex roots of polynomials; de Moivre's theorem.

Questions on vector arithmetic and vector operations, including dot and cross product, as well as the vector equations of planes and lines.

Solve for $x$:  $\log_{a}(x+b)- \log_{a}(x+c)=d$

Solve for $x$: $\displaystyle 2\log_{a}(x+b)- \log_{a}(x+c)=d$. 

Make sure that your choice is a solution by substituting back into the equation.

Template question. The student is asked to perform a two factor ANOVA to test the null hypotheses that the measurement does not depend on each of the factors, and that there is no interaction between the factors.