Sally is evaluating some test papers. there are 80 multiple choice questions in the test. students get two points for every correct answer and for every wrong answer or any question left blank, one mark is deducted from the total score. mick got 115 points on the test. if x represents the number of questions answered correctly, which equation can be used to find the number of questions he answered correctly? a. x  + (80 +  x) = 115  b.  2x  - (80 -  x) = 115  c.  x  - 115 = 80  d.  x  + 115 = 80

a

step-by-step explanation:

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

the factor is 2

step-by-step explanation:

let f(x)=8(3^(x−2)+2)

to stretch a graph by 3, it would be 3f(x)

g(x) =3f(x)

g(x) = 3*(8(3^(x−2))+2)

g(x) = 24 (3^(x-2) )+6

x     −2     0     2     4     6

f(x) 1/64 1/16   1/4     1     4

1/64 * z * z = 1/16

i multiplies by z twice because it its 2 steps from -2 to 0

1/64 z^2 = 1/16

multiply by 64 to clear the fraction on the left side

1/4 * 64 z^2 =1/16 *64

z^2 = 4

take the square root of each side

sqrt(z^2) = ±sqrt(4)

z = ±2  

we are multiplying by 2 each time.

d no solution

step-by-step explanation:

okay..i will pick 8!