A history test has 30 questions. A student answers 90% of the questions correctly. How many questions did the student get correc
1 answer:
You might be interested in
Answer:
f(x)^-1=-1
f(x)=x^3+1+3x^2+3x
Step-by-step explanation:
Answer:
Yes, twice
Step-by-step explanation:
The equation will intersect the x-axis when y = 0, so we have
x² - 4x = -3 now solve this quadratic for x...
x² - 4x + 3 = 0
factor...
(x - 3)(x - 1) = 0,
so at x = 1 and x = 3, the function crosses the x-axis
See the graph below
