a student earned a grade of 80% on a math tests that has 20 problems how many problems on this test did the student answered correctly

16

Step-by-step explanation:

A student earned a grade of 80% on a math test that has 20 problems. Therefore, the student answered 16 problems correctly.

Convert 80 to a decimal: .80

.80 ⋅ 20 = 16

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

3 1/3 x 2 3/5 = 8 2/3

step-by-step explanation:

just multiply the first number by the second number to get your answer.