Desmond's gcse maths exam is next week. as part of his revision he attempted 31
questions on his least favourite topic of percentages. he got 21 questions fully right on the first attempt. two days later he tried all 31 questions again and this time got
29 correct.
what is the percentage improvement in desmond's results?

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

The graph shows the distance kerri drives on a trip. what is kerri's speed?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.