Country A has a population of about 7,200,000. Country B has a population of about 3.6 x 106.

Part A
Which expression is equivalent to 7,200,000?

720 x 106

72 x 104

7.2 x 106

7.2 x 105

Part B
How many times larger is Country A's population than Country B's population?

200

20

2

0.2

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i think is g(1)=-1.

hope that i can

what i would say the best answer is a. 40.5

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