A student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answer correctly? The student gotproblems correct on the test.

The student got 16 problem correct

Step-by-step explanation:

Take the number of problems and multiply by the percent correct

20 * 80%

20 *.80

16

The student got 16 problem correct

The student got 16 problem correct.

Step-by-step explanation: To solve this problem, you first want to take the number of problems that are on the math test and multiply that by the percent the student got correct.

So we have 20 × 80%

Now write 80% as a decimal to get .80.

So we have 20 × .80 which is equal to 16.

So the student got 16 problems correct

and 4 problems incorrect on their test.

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.