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Bob earns £7.70 an hour, and he works 30 hours per week. If Bob has 28 days of unpaid holidays to take, how much does he earn in a year? Also will he be taxed? (Bob will be taxed if he earns over £10000 in one year)

28 days holidays is equivalent to 4 weeks holiday. So in total works for 48 weeks. Now Bob works 30 hours per week, multiply this by 48 giving 1440 hours for his working year. So in order to solve for his...

Answered by Christopher Y. • Maths tutor

2589 Views

Solve 2x^2 + 6x + 4 = 0 for x using the quadratic formula.

When you look at the question you can see that you have been given a quadratic equation. These tend to come in the format ax^2 + bx + c = 0. Remember it may not always be x, it could be y or z, or another...

Answered by Phoebe N. • Maths tutor

5246 Views

If f(x) = x^2 - x + 7, find f(3)

f (3) = (3)² - (3) + 7
= 9 - 3 + 7
= 13

Answered by Sagar J. • Maths tutor

2838 Views

Find the equation of the straight line passing through the points (7,5) and (8, 2)

To find the equation of a straight line we need two things, the gradient of the line and a point lying on the line. To find the gradient of this line we use the gradient formula: m = (y₂-y

Answered by Rory S. • Maths tutor

6207 Views

Solve the equation: x^2 - 9x + 20 = 0

This is a quadratic equation, and is likely that x can satisfy either of two values. We know these must multiply to form 20 and summate to -9, and thus they are (x-4) and (x-5). Hence, x is either 4 or 5....

Answered by Pippa M. • Maths tutor

6640 Views