Solve the system by using substitution

6x+y=12

4x+6y = (-8)

For the function y=7^x, if x increases by 2, how does the y-value change?

All young children attend school what is the contrapositive of the above statement

Hershey's 6-oz milk chocolate almond bar contains 25 milligrams of caffeine. A 20-oz bottle of Coca-Cola has 32 more milligrams of caffeine than the Hershey bar. How many milligrams of caffeine does the 20-oz bottle of Coca-Cola have?

What is the simplified expression for 6 (2 (y + x)) ? 6 y + 12 x 12 y + 12 x 12 y + 8 x 8 y + 8 x

If there is a decrease in the money supply that causes money to gain purchasing power and prices to fall, what is this called?

Complete the factorization of 3x^2 - 10x + 8. 3x^2 - 10x + 8 = (x - ___) (___ x - 4)

Find the product of 18 and 287. 0 4,066 2,583 5,166 O 4,516

Find the roots of the function. ƒ (x) = x^2 + 81 x = - 81i, 81i x = - 81, 81 x = - 9, 9 x = - 9i, 9i

The moon is 2.4 X 10^5 miles from Earth. Assume the speed of the fastest spacecraft is 3.6 X 10^4 miles per hour.

An eight character password uses four digits 1-6 and four letters A-Z with repeats allowed. How many possible passwords like this can be made?