Kim increased her typing speed from 56 to 63 words per minute. what was the percent of increase in her typing speed? a. 7% b. 11.1% c. 12.5% d. 17%

 The answer is C. 12.5%

Step-by-step explanation: To find the person of increase you first got to find the amount of increase. From 56 to 63 there was 7 amount of increase. No we compare 7 to the original or whole to find the increase but in percent.

Increase: 7

Percent of increase: 7/56 = .125 = 12.5%

The before original: 56

The after: 63

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions