Letty answered 15 out of 20 questions correctly on her history quiz. What is her grade as a percent?
50%
25%
O 100%
75%

75%

Step-by-step explanation:

One way to find this out is to divide 15 by 20

15/20 can be simplified into 0.75.

Another example:

Let's say a student does absolutely horrendus on the test, and gets only 4 questions correct out of 20. You can do 4/20 which is 0.2 in decimal form. (You can use a calculator.) This means that in this example, this student got a 20% on the test.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13