Consider the three transactions t1, t2, and t3, and the schedules s1 and s2 given below.

draw the serializability (precedence) graphs for s1 and s2, and state whether each schedule is serializable or not.

if a schedule is serializable, write down the equivalent serial schedule(s).

t1: r1 (x); r1 (z); w1 (x);

t2: r2 (z); r2 (y); w2 (z); w2 (y);

t3: r3 (x); r3 (y); w3 (y);

s1: r1 (x); r2 (z); r1 (z); r3 (x); r3 (y); w1 (x); w3 (y); r2 (y); w2 (z); w2 (y);

s2: r1 (x); r2 (z); r3 (x); r1 (z); r2 (y); r3 (y); w1 (x); w2 (z); w3 (y); w2 (y);

Which statement best defines tuition? tuition is federal money awarded to a student. tuition is aid given to a student by an institution. tuition is money borrowed to pay for an education. tuition is the price of attending classes at a school.

Darlene has a balance of 3980 on a credit card with an apr of 22.8% paying off her balance and which of these lengths of time will result in her paying the least amount of interest?

Quick calculate the roi dollar amount and percentage for these example investments. a. you invest $50 in a government bond that says you can redeem it a year later for $55. use the instructions in lesson 3 to calculate the roi dollar amount and percentage. (3.0 points) tip: subtract the initial investment from the total return to get the roi dollar amount. then divide the roi dollar amount by the initial investment, and multiply that number by 100 to get the percentage. b. you invest $200 in stocks and sell them one year later for $230. use the instructions in lesson 3 to calculate the roi dollar amount and percentage. (3.0 points) tip: subtract the initial investment from the total return to get the roi dollar amount. then divide the roi dollar amount by the initial investment, and multiply that number by 100 to get the percentage.