The number -2 is a solution to which of the following inequalities?
-3x < 1
x - 7 < -4
-12/x> 10
x + 7 > 5

Substitute the value of x = -2 to the inequalities:

-3x < 1

(-3)(-2) < 1

6 < 1 FALSE

x - 7 < -4

-2 - 7 < -4

-9 < -4 TRUE

-12/x > 10

-12/(-2) > 10

6 > 10 FALSE

x + 7 > 5

-2 + 7 > 5

5 > 5 FALSE

x - 7 < -4

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

if she was to only spend a dollar she can get 1lb

step-by-step explanation: