A student showed the steps below while solving the inequality by graphing. Step 1:
Write a system of equations:
Step 2: Graph the two equations:

Step 3: Identify the values of x for which :
x = 3 or x = 5
Step 4: Write the solution in interval notation:

What is the first step in which the student made an error?
Step 1, because the student should have written a compound statement with “and”
Step 2, because the student should have graphed the inequalities
Step 3, because the values for x for which also include values between 3 and 5
Step 4, because the solution is one continuous interval

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out