Identify the value for the variable.
What is the value of x in this simplified expression? 7^-9*7^-3=7^x
a.-12
b.-6
c.3
d.27

it is x=-4

step-by-step explanation:

if you're trying to figure out how much each ounce cost it would be 0.20

cents each ounce

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629

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