Math 017 Materials With Exercises

Ex.33 If possible, evaluate x y when3 2a) x , y 5 32 9b) x , y 7 14c) x 0.2,y 1.08Ex.34 If possible, evaluate xy when2 22a) x , y 11 99b) x 4,y 10c) x 0.2,y 0. 01Ex.35 If possible, evaluate yx when2a) x ,11b)y229910y 0.x 4,y c) x 0.2, 01mEx.36 If possible, evaluate ( x) whena) x 10,m 7b) x 2,m 41c) x ,2m 3d) x 0.1,m 5Ex.37 Use the letter x to represent a number and write the following statements as algebraic1expressions. Then evaluate each expression when x .2a) A number doubledb) Three fourths of a numberc) A number raised to the second powerEx.38 Evaluate t , when t 1,t 1Based on your results, which of the following are true?a) t is always positiveb) t is always negativec) t may be positive or negative depending on the value of t14