–7x + 8y = 1
4x – 8y = 20
what is the y-coordinate of the solution for this system?
a. –1
b. –6
c. 1
d. 6
, i got 7 but thats not one of the answers

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

If f(x) = 4 - x2 and g(x) = 6x, which expression is equivalent to (g-f)(3)? 06-3-(4 + 3)2 06-3-(4-33 6(3) - 4 +32 6(3) -4 -32

What is the approximate value of the correlation coefficient for the given graph? a. 1 b. 5 c. 3 d. -1