Question 10 (5 points) Solve |5x – 1| = |2x + 5|
Question 10 options:

A)

No solutions

B)

x = 1∕2

C)

x = –1∕2 or x = –7

D)

x = 2 or x = –4∕7
Question 11 (5 points)
Solve 5x + 34 = –2 + 7x for x.
Question 11 options:

A)

x = –16

B)

x = 18

C)

x = 12

D)

x = –24
Question 12 (5 points)
Solve x + 2∕5 = 1∕3 for x.
Question 12 options:

A)

x = 1∕15

B)

x = –11∕15

C)

x = 11∕15

D)

x = –1∕15
Question 13 (5 points)
Which expression is equivalent to 9x – 3y – 5x + 7y + x + y?
Question 13 options:

A)

5x2 + 4y2

B)

4x + 4y

C)

10xy

D)

5x + 5y
Question 14 (5 points)
The sum of four consecutive integers is 18. Find the largest consecutive integer.
Question 14 options:

A)

7

B)

3

C)

5

D)

6
Question 15 (5 points)
Solve for r.
Question 15 options:

A)

–8.7 or 8.7

B)

–68.5 or 68.5

C)

–2.74 or 2.74

D)

–18.7 or 18.7

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

d

step-by-step explanation:

i used the pitagoras theoreme