F(x) = -7x2 + 8x + 2
What is the value of the discriminant of f?
How many x-intercepts does the graph of f have?

120

2 real intercepts

Step-by-step explanation:

f(x) = -7x^2 + 8x + 2

The discriminant is

b^2 -4ac

where ax^2 +bx+c

a=-7 b =8 c=2

The discriminant is

8^2 - 4(-7) (2)

64 +56

120

This will have 2 real x intercepts because 120>0

120 ; Two

Step-by-step explanation:

-7x2 + 8x + 2

B² - 4AC

8² - 4(-7)(2)

64 - (-56)

120

Since 120 > 0, the graph will have two distinct x-intercepts

4th option is correct xy=-10

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$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p