f(x) = 5x − 12. (i) Calculate f(4). (ii) Find f( x + 1). Give your answer in the form ax + b .
i) (5 x 4) -12 = 8 ii) 5(x + 1) - 12 5x + 5 -12 5x - 7
SM
Related Maths GCSE answers
All answers ▸(x(x+1))/2 = 3 Solve For x.
Solve: 4(3x − 2) = 2x - 5
A GCSE is graded out of 140 marks. 1/5 of these marks were given for coursework. The rest were divided between two reading and listening tests, with the marks split in the ratio 3:4 respectively. How many marks were given for the reading test?
Simplify: 3(x+5)-4(2x+1)