1) Express the following statements in an Algebraic expression and solve them (a) The sumof two numbers is 21, and one number is twice the other. Find the numbers? (b) Tenless than four times a certain number is 14. Detemine the number? (c) Find the gradient of the curve y= x – 6x- 7 at the points where the curve cuts the x- axis? (d) If A- 256 Find the values of mand r? 4 729

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