Practice the use of a pocket calculator and the rules of exponents from Section 1.1 to solve for y.

Round all answers to five decimal places.

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(a) y=45.43 y = 45+3 = 48 To find 48, enter 4 on your calculator, press the key, enter 8 for the power, and hit the (Rule 1) key. y = 65,536 (b) y 137 134 y = 13(7-4)=133 Entering 13, pressing the key, then entering 3 and hitting the (c) y 176178 y = 2197 y = 17(6-8)=17-2 (Rule 2) key, To find 172, enter 17, press the key, then enter 2 followed by the key to make it negative, and hit the key. y = 0.00346 (d) y = (53)2 y = 5(3-2) = 56 (Rule 3) Entering 5, pressing the key, then entering 6 and hitting the key, y = 15,625 (e) y = (2-4)2 y=2(-4-2)=2-8 Entering 2 and pressing the key, then entering 8 followed by the key, and hitting the = key, y = 0.00391