John invested 400 in a savings account how much interest will he earn in 5 years if the interest rate is 7 percent
1 answer:
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Answer:
B
Step-by-step explanation:
Where f(x) and g(x) intersect on the x- axis the value of y is zero
Equate either of the 2 functions to 0 and solve for x
Using f(x) = 8x² - 2, then
8x² - 2 = 0 ( add 2 to both sides )
8x² = 2 ( divide both sides by 8 )
x² = =
Take the square root of both sides
x = ± = ±
Hence k = → B